Views: 0 Author: ZHE Publish Time: 2025-09-20 Origin: Site
The custom headless washer is a specially designed fastening component. Its design purpose is to be flush with the surface, thereby eliminating protrusions. Unlike the standard universal washers, they are custom-made according to specific specifications, making them crucial in applications where precision and surface integrity are strictly required. Below, we will elaborate on its core functions and value.
The custom countersunk washers are mechanical parts with a conical (counter sunk) top design. This design enables them to fit perfectly with countersunk fasteners (such as flat-head screws or bolts), thus ensuring that the entire component is flush with the material surface.
Unlike standard washers, the size and material of standard washers are fixed. However, custom-made ones are tailored to specific requirements. A manufacturer might need a stainless steel washer with a diameter of 10 millimeters and a 90° chamfer, while a construction company might need a 20-millimeter carbon steel washer for heavy loads. This customized approach eliminates the gap between the washer and the fastener, reduces the risk of loosening, and extends the lifespan of the component.
In fasteners, washers can distribute the clamping force of the fastener over a larger area. Custom countersunk washers enhance this function by ensuring a uniform force distribution - this is crucial for fragile materials such as plastic or wood, as they may crack under concentrated pressure. Their function is not only functional but also enhances aesthetics, making them highly suitable for prominent applications (such as consumer electronics, building hardware).
The performance of custom countersunk washers is entirely dependent on the selected material. Stainless steel and carbon steel are the most commonly used material options, and each material has its own advantages in terms of durability, corrosion resistance, and cost. This section compares them to help you choose the best material for your specific application.
The selection of materials directly affects the service life, strength and applicability of the sealing gasket in different environments. For custom countersunk sealing gaskets, two materials stand out: stainless steel and carbon steel. These two materials each have their advantages and can handle various challenges, such as preventing rust in marine environments or withstanding heavy pressure in construction.
Stainless steel is an alloy composed of iron, chromium, and (usually also including) nickel. Among them, chromium forms a protective oxide layer, thereby preventing corrosion. The most common grades used for making washers are 304 and 316:
304 stainless steel: Offers good corrosion resistance for indoor, humid, or mild outdoor use (e.g., kitchen appliances, residential hardware). It balances cost and performance, making it the most popular choice.
316 stainless steel: Adds molybdenum for enhanced resistance to saltwater, chemicals, and extreme temperatures. It’s ideal for marine equipment, food processing machinery, and medical devices—where hygiene and corrosion resistance are critical.
The stainless steel washers are also non-magnetic (this is true for most grades), and their surfaces have been polished. Therefore, they are suitable for applications where they need to be exposed. However, they are more expensive than carbon steel and have slightly lower tensile strength - so they are not suitable for situations where extremely heavy loads need to be borne.
Carbon steel (or plain steel) is an alloy of iron and carbon, with no added chromium. It’s known for its high tensile strength—making it ideal for applications requiring maximum load-bearing capacity (e.g., construction beams, automotive chassis).
Carbon steel washers offer high cost-effectiveness and are thus the preferred choice in large projects where budget is crucial. However, they lack corrosion resistance: without a protective coating, they will rust when exposed to water or chemicals. To address this issue, Hangzhou Shengpeng offers surface treatment methods such as hot-dip galvanizing or electro-galvanizing - adding a layer of zinc to prevent rusting.
Common grades for carbon steel washers include 1018 (mild steel, for low-to-moderate loads) and 1045 (medium-carbon steel, for higher strength). They’re best suited for dry, indoor environments (e.g., industrial machinery frames) or outdoor applications with coating protection.
| Material Type | Corrosion Resistance | Cost Range | Suitable Environments | Typical Applications |
| 304 Stainless Steel | Good (resists mild moisture) | Medium | Indoor, humid, mild outdoor | Kitchen appliances, residential hardware, electronics |
| 316 Stainless Steel | Excellent (resists saltwater/chemicals) | High | Marine, food processing, medical | Ship components, FDA-compliant machinery |
| Carbon Steel (1018) | Poor (requires coating) | Low | Dry indoor, coated outdoor | Construction frames, furniture hardware |
| Carbon Steel (1045) | Poor (requires coating) | Low-Medium | Heavy-load dry environments | Automotive chassis, industrial machinery |
Custom countersunk washers don’t operate in isolation—they’re part of a larger fastening system that includes fasteners (screws, bolts) and finishing washers. Understanding how these components work together ensures optimal performance, safety, and longevity. Here’s a breakdown of their synergy.
The success of the fastening system depends on the interaction among its various components. The custom countersunk washers, fasteners, and edge sealing washers each play a unique role - but their combined functionality is the key to ensuring a secure, smooth, and durable connection.
Countersunk fasteners (e.g., flat-head screws, countersunk bolts) have a conical head designed to sit below a material’s surface. Custom countersunk washers match this conical shape, creating a seamless interface:
The washer’s countersink angle (typically 82° or 90°) aligns with the fastener’s head angle, ensuring no gaps. This prevents the fastener from wobbling or loosening over time.
The washer distributes the fastener’s clamping force across a wider area. For example, a 5mm flat-head screw applied directly to wood might split it—but paired with a 10mm custom countersunk washer, the force is spread, protecting the wood.
The custom nuts of Shengpeng in Hangzhou are designed based on specific fastener dimensions (such as M5, 1/4 inch) and head styles. During the design process, we will ask you to provide the specifications of the fasteners to ensure perfect compatibility - thus avoiding situations where components do not match.
Finishing washers (also called “decorative washers”) are thin, often polished components used to improve a fastening system’s aesthetics. They sit between the custom countersunk washer and the material surface, serving two key purposes:
Aesthetics: Finishing washers have a smooth, uniform finish (e.g., chrome, brass) that hides small imperfections in the material or washer. They’re ideal for visible applications like furniture, cabinetry, or consumer electronics.
Surface protection: For soft materials like leather or plastic, finishing washers add an extra layer of protection against scratches from the countersunk washer.
A high-end furniture brand may combine stainless steel custom-made embedded gaskets (to enhance strength) with copper-surface-treated gaskets (to improve appearance) to fix the wooden tabletop. This combination not only ensures a stable connection but also achieves a beautiful effect.
It is particularly important to note that precision-machined washers cannot replace custom countersunk washers - they are complementary to each other. The countersunk washers are responsible for load distribution and fastener alignment, while the precision-machined washers enhance aesthetics and provide surface protection.
Customized countersunk washers have a wide range of applications and are suitable for important operations in numerous fields, from automobiles to aerospace. They can achieve smooth and stable fastening connections, making them indispensable in applications that emphasize precision, safety, or aesthetics. Here are the relevant industries and their specific uses.
The automotive industry relies on custom countersunk washers for both structural and aesthetic components:
Body panels: Washers made from galvanized carbon steel or 304 stainless steel fasten door panels, hoods, and fenders. Their flush design ensures smooth aerodynamics and prevents wind noise.
Engine components: High-temperature 316 stainless steel washers secure parts like valve covers, resisting heat and oil corrosion.
Interior parts: Polished stainless steel washers (paired with finishing washers) fasten dashboard components and seat frames, ensuring a clean, professional look.
Hangzhou Shengpeng supplies custom washers to automotive manufacturers, adhering to strict ISO/TS 16949 standards for quality and consistency.
Aerospace applications demand ultra-precise, high-performance components—and custom countersunk washers are no exception:
Aircraft fuselages: Lightweight 316 stainless steel washers fasten aluminum panels, ensuring flushness to reduce drag. They must meet AS9100 aerospace quality standards.
Engine parts: Heat-resistant alloy washers (often a mix of stainless steel and titanium) secure turbine components, withstanding temperatures up to 600°C.
In the aerospace industry, even a 0.1 millimeter error in the size of a gasket can lead to equipment failure - while Hangzhou Shengpeng Company has adopted numerical control processing technology to achieve extremely tight tolerance requirements of up to ±0.02 millimeters for these applications.
Construction projects require washers that can handle heavy loads and outdoor conditions:
Steel structures: Carbon steel custom countersunk washers fasten I-beams and girders, distributing weight to prevent structural stress. Hot-dip galvanization protects them from rain and humidity.
Architectural hardware: 304 stainless steel washers (paired with finishing washers) fasten glass curtain walls and metal facades. Their corrosion resistance ensures long-term durability, even in coastal areas.
Concrete applications: Zinc-plated carbon steel washers secure anchor bolts in concrete foundations, withstanding the pressure of cured concrete.
These industries prioritize hygiene and corrosion resistance—making stainless steel custom countersunk washers the only choice:
Food processing: 316 stainless steel washers fasten conveyor belts, mixers, and tanks. They resist bacteria growth and can be sanitized with harsh chemicals (e.g., bleach) without rusting.
Medical equipment: The polished 316L stainless steel washers (made of low-carbon material to enhance corrosion resistance) are used to secure surgical tools and diagnostic equipment. They comply with the FDA's standards for biocompatibility, ensuring that no toxic substances will seep into the areas in contact with patients.
Small, precise custom countersunk washers are critical for electronics and consumer products:
Smartphones and laptops: Miniature stainless steel washers (as small as 2mm in diameter) fasten circuit boards and casings. Their flush design prevents damage to internal components.
Power tools: Carbon steel washers secure motor parts, handling the vibration and torque of daily use. Electro-galvanization protects them from dust and moisture.
Furniture: Brass or stainless steel washers (paired with finishing washers) fasten table legs, chairs, and cabinets. They balance strength with aesthetics, ensuring furniture looks and functions well for years.
Hangzhou Shengpeng offers you high-quality custom countersunk washers through a strict and customer-centric manufacturing process. From understanding your requirements to final delivery, every step is designed to ensure precision, consistency, and compliance with your specifications. Let's take a look at this process together.
The process starts with listening to you. Our sales and engineering teams work together to gather key details:
Application: What industry are you in? (automotive, medical)
Specs: Diameter, thickness, countersink angle (82°/90°), material (stainless steel/steel), and quantity.
Standards: Do you need compliance with ISO, AS9100, FDA, or other certifications?
Special requests: Surface treatments (galvanization, polishing), packaging, or lead time.
We also offer technical consulting services - if your gasket is going to come into contact with seawater, we recommend using 316 stainless steel; for high-load dry applications, we recommend using carbon steel. This way, you can ensure that you select a gasket that not only meets your functional requirements but also fits your budget.
Once the requirements are determined, our engineers will use CAD (Computer-Aided Design) software to create a three-dimensional model of this custom gasket. We will simulate its interaction with your fasteners and materials, checking whether it can fit perfectly and whether the load distribution is uniform.
If you need to test the design, we offer rapid prototyping:
We use CNC punching or laser cutting to create small-batch samples (typically 5-10 pcs) in 3-5 business days.
Samples are sent to you for testing—you can check size, fit, and performance with your fasteners. We make revisions if needed (e.g., adjusting the countersink angle) until the prototype meets your expectations.
We source only high-quality materials from trusted suppliers:
Stainless steel: We use 304, 316, and 316L grades, with certificates of analysis (CoA) to verify composition.
Carbon steel: We use 1018 and 1045 grades, with mill test reports (MTR) to confirm strength and purity.
The production process begins by using numerical control stamping or laser cutting to shape the materials into thin sheets (flat metal discs) - both methods ensure the accuracy of the dimensions. Next, we use washers to create the conical top surface, with an angle tolerance of ±1°.
After forming, we apply surface treatments based on your needs:
Galvanization (for carbon steel): Hot-dip galvanization (thicker zinc layer for outdoor use) or electro-galvanization (thinner layer for indoor use).
Polishing (for stainless steel): Mechanical polishing to achieve a mirror finish (for visible applications).
Passivation (for stainless steel): A chemical treatment that enhances the oxide layer, boosting corrosion resistance.
Quality control is embedded in every stage of production. After manufacturing, we perform:
Dimensional inspection: Using calipers, micrometers, and optical comparators to check diameter, thickness, and countersink angle—ensuring tolerances of ±0.02mm.
Performance testing: Load testing (to verify strength) and salt spray testing (for stainless steel/carbon steel with coating) to check corrosion resistance.
Visual inspection: Checking for surface defects (e.g., scratches, burrs) that could affect performance or aesthetics.
Only washers that pass all tests move to packaging.
We package washers to prevent damage during shipping:
Small quantities: Sealed plastic bags with labels (specs, quantity, lot number).
Large quantities: Cardboard boxes or wooden crates with foam inserts.
We offer flexible delivery options, including air freight (for urgent orders) and sea freight (for large batches). We also provide tracking information so you can monitor your order’s progress.
Unqualified custom countersunk washers may cause tightening failure, thereby posing safety risks and incurring high maintenance costs. At Shengpeng in Hangzhou, we strictly adhere to quality control (QC) standards to ensure that every washer meets or exceeds industry standards. Here is our quality control framework.
Quality is non-negotiable for us—and our QC process starts long before production. We follow a “preventive” approach, identifying and addressing potential issues early to avoid defects. Our standards align with global certifications, ensuring consistency for customers worldwide.
Hangzhou Shengpeng holds the following certifications to validate our quality commitment:
ISO 9001:2015: This international standard for quality systems ensures our processes are consistent, efficient, and customer-focused. We undergo annual audits to maintain this certification.
ISO/TS 16949: For automotive customers, we comply with this specialized standard, which focuses on product safety and reliability for automotive components.
AS9100: For aerospace customers, we meet this strict standard, which requires traceability, risk management, and adherence to aerospace-specific quality requirements.
FDA Registration: For washers used in food/medical applications, we are FDA-registered, ensuring our products meet biocompatibility and hygiene standards.
All certifications are available upon request—we provide test reports and compliance documents to verify our claims.
Even the best manufacturing process can’t fix poor-quality materials. Our IMI process ensures we only use top-grade stainless steel and carbon steel:
Material verification: We cross-check the supplier’s CoA/MTR with the actual material.
Defect checks: We inspect material for cracks, dents, or impurities that could weaken the washer. Any defective material is rejected immediately.
Traceability: Each batch of materials will be assigned a unique batch number, which will be tracked throughout the production process. This enables us to trace any washing machine back to its original material source - this is of crucial importance in the aerospace/medical fields.
During production, we perform regular checks to ensure consistency:
First Article Inspection (FAI): Before full-scale production, we inspect the first washer from each batch. We verify dimensions, countersink angle, and surface finish—only proceeding if the first article passes.
Statistical Process Control (SPC): We take random samples (every 100 units) and use SPC software to monitor key metrics (e.g., diameter, thickness). If metrics drift outside tolerance, we adjust the machine immediately.
Operator Training: All production staff undergo rigorous training on QC procedures. They are empowered to stop production if they notice defects—ensuring issues are caught early.
After production, every washer undergoes final inspection:
Dimensional Testing: We use precision tools (e.g., digital calipers, optical comparators) to check all critical dimensions. Tolerances are set to ±0.02mm for most applications—tighter for aerospace (±0.01mm).
Corrosion Testing: For stainless steel washers, we perform 48-hour salt spray testing (per ASTM B117) to verify corrosion resistance. For galvanized carbon steel, we test for zinc coating thickness (per ASTM B633).
Load testing: We used a general testing machine to apply pressure to the gasket to ensure that it could withstand the specified load (for the 304 stainless steel gasket, the load is 500 Newtons) and would not deform.
Visual Inspection: We check for surface defects (burrs, scratches) using magnifying glasses. Washers with even minor defects are sorted out and recycled.
Quality doesn’t end with delivery. We collect customer feedback to identify areas for improvement:
Post-Delivery Surveys: We send surveys to customers 2-4 weeks after delivery, asking about washer performance, fit, and quality.
Root Cause Analysis (RCA): If a customer reports an issue, we perform RCA to identify the cause (e.g., a machine calibration error) and implement corrective actions.
Process Updates: We regularly review QC data and customer feedback to update our processes. For example, after a customer requested better corrosion resistance for marine washers, we added a passivation step to our 316 stainless steel production.
Standard countersunk washers work for basic fastening needs, but custom options offer unique benefits that solve complex challenges. From perfect fit to enhanced durability, the advantages of custom washers justify their investment—especially for specialized applications. Let’s explore these benefits.
Standard washers are convenient, but they often force you to compromise on fit, material, or performance. Custom countersunk washers eliminate these compromises, providing solutions tailored to your exact needs. Below are the key advantages of choosing custom over standard.
Standard washers come in fixed sizes (e.g., M4, M6) and countersink angles (usually 90°). If your application requires a non-standard size (e.g., M5.5) or angle (e.g., 82° for aerospace fasteners), standard washers will not fit—leading to gaps，or even fastening failure.
Custom washers are designed to match your specific specs. For example, a solar panel manufacturer needed a 12mm-diameter washer with a 82° countersink angle to fit their proprietary bolts. Hangzhou Shengpeng created a custom design that fit perfectly, eliminating installation delays and improving panel stability.
Standard washers are often limited to basic materials (e.g., low-grade carbon steel, 304 stainless steel). If your application requires a specialized material (e.g., 316 stainless steel for saltwater, galvanized carbon steel for outdoor use), standard options will underperform.
Custom washers let you choose the exact material for your environment:
Corrosive environments: 316 stainless steel or galvanized carbon steel.
High-load environments: 1045 carbon steel or alloy steel.
High-temperature environments: Heat-resistant 316 stainless steel or Inconel alloy.
This optimization extends washer lifespan—saving you money on replacements.
In critical applications (e.g., aerospace, medical), standard washers pose safety risks. For example, a standard washer that’s too small for a fastener can slip, causing the fastener to loosen and a component to fail.
Custom washers are engineered to meet your safety requirements:
They distribute load evenly, reducing stress on materials.
They fit perfectly with fasteners, preventing 松动.
They meet industry-specific safety standards (e.g., AS9100 for aerospace).
For a medical device manufacturer, we created custom 316L stainless steel washers that met FDA biocompatibility standards—ensuring no harmful substances leached into patient contact areas.
While custom washers have a higher upfront cost than standard ones, they save money over time:
Reduced downtime: Custom washers fit perfectly, eliminating installation delays caused by mismatched standard washers.
Fewer repairs: Durable, optimized materials mean washers last longer—reducing the need for replacement and maintenance.
Lower waste: Standard washers often require trimming or modification to fit, leading to waste. Custom washers are made to size, so no waste is generated.
A construction company that switched to custom carbon steel washers reported a 20% reduction in maintenance costs over two years—thanks to fewer washer failures and replacements.
Standard washers often have rough finishes or inconsistent sizes, making them unsuitable for visible applications (e.g., furniture, consumer electronics). Custom washers offer aesthetic benefits:
Polished finishes: Stainless steel washers can be polished to a mirror finish, enhancing the look of visible components.
Consistent sizing: Custom washers have uniform dimensions, ensuring a clean, professional appearance.
Matching finishes: We can match washer finishes to your product (e.g., brass-plated washers for brass hardware).
A furniture brand used our custom polished stainless steel washers (paired with brass finishing washers) to enhance the look of their tables—leading to positive customer feedback on aesthetics.
Ordering custom countersunk washers from Hangzhou Shengpeng is a simple, transparent process. We guide you from initial consultation to delivery, ensuring your washers meet every specification. Below is a step-by-step guide to placing your order.
We understand that ordering custom components can be overwhelming—so we’ve streamlined our process to be customer-friendly. Whether you’re a small business or a large manufacturer, our team is here to support you at every step.
The first step is to reach out to our sales team. You can contact us via:
Email: carlxu@hardware-sp.com (we respond within 24 hours).
Phone: +86-18757124366 (available 9:00-18:00 GMT+8).
Website: Fill out the “Custom Request” form on our website (www.hardware-sp.com), including your name, company, and basic requirements.
When contacting us, share as much detail as possible:
Application (automotive door panel, medical device).
Basic specs: Diameter, thickness, countersink angle, material (stainless steel/steel).
Quantity (500 units, 10,000 units).
Deadline: When do you need the washers?
Special requests: Certifications (ISO/AS9100), surface treatments, packaging.
After receiving your request, our sales team will connect you with an engineer for a technical consultation. The engineer will:
Review your specs and confirm feasibility (e.g., “Can we achieve a ±0.01mm tolerance for your aerospace washer?”).
Offer recommendations: For example, if you’re using the washer in a marine environment, they may suggest 316 stainless steel instead of 304.
Address your questions: “What’s the lead time for 1,000 units?” or “Can you provide a sample?”
Once specs are finalized, we’ll send you a detailed quotation including:
Unit price and total cost.
Lead time.
Payment terms (e.g., 30% deposit, 70% before delivery).
Shipping options and costs.
We offer competitive pricing—our direct manufacturing model means no middlemen, so you get high-quality washers at fair prices.
If you’re unsure about the design or want to test performance, we offer sample production:
We produce 5-10 samples in 3-5 business days.
Samples are free for orders over 1,000 units; for smaller orders, a small fee applies (refundable if you proceed with full production).
We ship samples via DHL/FedEx for fast delivery.
You can test the samples for fit, performance, and aesthetics. If revisions are needed (e.g., adjusting the countersink angle), we’ll modify the design and produce new samples—free of charge.
Once you approve the sample (or skip sampling for repeat orders), we’ll send you a sales contract. The contract includes:
Detailed specs (size, material, quantity).
Quality standards and certifications.
Delivery date and shipping method.
Payment terms.
After you sign the contract, pay the deposit (usually 30% of the total cost). We start production immediately upon receiving the deposit.
During production, we keep you informed:
We send weekly progress reports, including photos of the washers in production.
If there are any delays (e.g., material shortages), we notify you immediately and offer solutions (e.g., expedited shipping).
You can also request a factory tour (in-person or virtual) to see your washers being made—we’re transparent about our process.
Before shipping, we perform a final inspection and send you a inspection report (including photos and test results). Once you approve the report, pay the balance (70% of the total cost).
We ship the washers via your preferred method (DHL, FedEx, sea freight). We provide a tracking number so you can monitor delivery.
After delivery, our after-sales team follows up:
We check if the washers meet your expectations.
We address any issues (e.g., damage during shipping) promptly—we offer replacements or refunds for defective products.
We keep your design on file for future orders, making reordering faster.
Customers often have questions about custom countersunk washers—from material selection to lead times. Below, we answer the most common FAQs to help you make informed decisions, whether you’re new to custom fasteners or refining your order.
A1: Standard countersunk washers have fixed sizes (e.g., M4, M6), angles (usually 90°), and materials (e.g., low-grade carbon steel). They work for basic applications but force compromises on fit or performance. Custom washers are tailored to your specs: you choose the size, angle, material, and surface treatment. They’re ideal for unique applications (e.g., aerospace, medical) where precision or durability is critical.
A2: Choose stainless steel if your washer will be exposed to moisture, chemicals, or outdoor conditions (e.g., marine, food processing). It resists corrosion and is easy to sanitize. Choose carbon steel if your application is dry, requires high load-bearing capacity (e.g., construction), and budget is a priority. For carbon steel in outdoor use, add a galvanized coating for rust protection.
A3: Lead time depends on quantity and complexity:
Samples: 3-5 business days.
Small batches (100-500 units): 7-10 business days.
Medium batches (500-1,000 units): 10-12 business days.
Large batches (1,000+ units): 12-15 business days.Urgent orders (e.g., 48-hour turnaround for samples) are available for an additional fee.
A4: Yes! We need your fasteners’ specs (size, head angle, type) to design a compatible washer. If you can send a sample fastener, we’ll test the washer’s fit in our factory. We also have a database of common fastener specs (e.g., ISO, ANSI) to speed up design if you don’t have a sample.
A5: Yes. We offer a range of surface treatments based on your needs:
Passivation: Enhances stainless steel’s corrosion resistance (ideal for marine/medical).
Black oxide: Gives carbon steel a black finish for aesthetics and mild rust protection (used in automotive interiors).
Chrome plating: For a decorative, corrosion-resistant finish (used in furniture or consumer goods).
PTFE coating: Reduces friction (ideal for washers in moving parts, e.g., door hinges).
A6: All washers undergo:
Dimensional testing (calipers, optical comparators) to check size and angle.
Corrosion testing (salt spray for stainless steel/galvanized steel).
Load testing to verify strength.
Visual inspection for defects.For certified applications (e.g., aerospace), we also perform material traceability tests and compliance checks (AS9100).
A7: We don’t have a strict minimum order quantity (MOQ). We can produce as few as 50 units for small businesses or prototype projects. For orders under 100 units, the unit price is slightly higher (due to setup costs), but we still maintain the same quality standards. For repeat orders, we offer volume discounts for batches over 1,000 units.
Transition Summary: With so many manufacturers offering custom countersunk washers, choosing the right partner is critical. Hangzhou Shengpeng stands out for our precision, quality, and customer focus. Below, we summarize why we’re the top choice for businesses worldwide.
At Hangzhou Shengpeng, we don’t just make custom countersunk washers—we solve your fastening challenges. Our combination of technical expertise, strict quality control, and customer-centric service makes us a trusted partner for industries ranging from automotive to aerospace.
Here’s what sets us apart:
Tailored Solutions: We design washers to your exact specs, no compromises. Whether you need a 2mm stainless steel washer for electronics or a 50mm carbon steel washer for construction, we deliver.
Quality You Can Trust: Our ISO 9001/AS9100/FDA certifications and rigorous QC process ensure every washer is reliable, durable, and compliant.
Fast Lead Times: We understand deadlines matter—we offer rapid prototyping and flexible production schedules to meet your timeline.
Competitive Pricing: Our direct manufacturing model eliminates middlemen, so you get high-quality washers at fair prices.
Global Support: We ship to over 50 countries, with multilingual sales and engineering teams to support international customers.
Whether you’re a small business starting a new project or a large manufacturer needing bulk orders, we’re here to help. Contact Hangzhou Shengpeng today to discuss your custom countersunk washer needs—and experience the difference precision makes.
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Leading Provider of Precision CNC Aluminum Machining ServiceIn the highly competitive manufacturing sector, precision-machined aluminum components are a cornerstone for many industries. Shengpeng Hardware has stood out and become a trusted factroy, offering top-notch CNC aluminum machining services
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Leading Supplier for Precision Small Parts StampingMeta DescriptionShengpeng Hardware is a trusted metal stamping part supplier specializing in high-precision small parts stamping. We offer custom solutions, quality materials, and strict QC for industries like automotive, electronics, and medical.
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OEM Metal precision stamping part suppliersMeta Description: Shengpeng Hardware is a leading manufacturer of precision stamping suppliers. OEM metal stamping parts: 301 SS stamped parts, 304 SS stamped parts. We offer high-quality and customized metal stamping solutions, integrating professional kn
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Custom Countersunk Washers for Industrial FasteningWhat Are Custom Countersunk Washers, and Why Do They Matter in Fastening?The custom headless washer is a specially designed fastening component. Its design purpose is to be flush with the surface, thereby eliminating protrusions. Unlike the standard
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How to Choose a Custom Hinge Factory: Shengpeng Stands OutCustom hinges are not just small hardware pieces - they determine the functionality, durability and aesthetics of items such as furniture, doors and musical instruments. Ordinary off-the-shelf hinges often fail to meet unique dimensions, load
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Custom CNC Machined Parts: Precision Solutions for youWhat Are Custom CNC Machined Parts?Custom CNC Machined parts are manufactured using CNC technology and are specifically tailored to meet the designs and industry requirements of individual customers. Unlike standard parts, they are adapted to uni
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High Precision CNC Machining Parts – Stainless Steel&CarbonIntroduction to Shengpeng Hardware & High Precision CNC Machining PartsThis section outlines Shengpeng Hardware’s 18-year expertise in high precision CNC machining, focusing on our core focus—custom parts for stainless steel and carbon steel
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How to Choose the Right Washer: The Ultimate Guide by Shengpeng HardwareSelecting the perfect washer is a critical step in countless industrial, construction, and DIY projects. These small but vital components ensure fasteners work correctly, providing load distribution, vibration resistance, and sp
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Precision Metal Stamping Services 18 Years of Manufacturing Shen Peng is a benchmark in the metal processing industry for quality and precision. Over the past 18 years, we have been dedicated to mastering the technology of metal stamping and have steadfastly provided reliable services to customers a
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Precision Metal Stamping Services 18 Years of Manufacturing Shen Peng is a benchmark in the metal processing industry for quality and precision. Over the past 18 years, we have been dedicated to mastering the technology of metal stamping and have steadfastly provided reliable services to customers a
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CNC Custom Precision Machining for Diverse IndustriesNowadays, accuracy and personalized services are the keys to maintaining competitiveness. Hangzhou Shengpeng is a leading provider of CNC customized processing services in China, and has been committed to offering first-class, tailor-made solution
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China Manufacturer, Washers For Custom & StandardMeta Description: Discover top China stamping & CNC machining manufacturers for washers—countersunk, disc, square, ring & custom types. High-quality, cost-effective solutions for industrial needs.What Are Stamping Washers? Core Basics from China Manuf
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Countersunk Washer: CNC Machining & StampingIn the fields of mechanical engineering and assembly, the washer is one of the most important components, as it is a stable and firmly connected part of the assembly. The countersunk washer stands out particularly due to its specially designed structure ta
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Washers Size Chart: Spring, Square & Countersunk TypesWasher are crucial components in mechanical and construction projects - they serve as a cushion, distributing loads and preventing fasteners from loosening. Among all materials, stainless steel stands out due to its outstanding corrosion resistan
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Metal Processing Techniques Modern ManufacturingIn the manufacturing industry, metal processing is not merely about cutting and shaping – it also involves providing components that balance performance, cost and reliability. From automobiles to aerospace, every industry relies on core processes such
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Metal Stamping: Stainless Steel, Copper, AluminumMetal stamping is an important process that can produce precise and cost-effective metal components, which are applied in various industries. From automotive parts to electronic enclosures, from medical equipment to aerospace components, metal stampin
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What is CNC Machining? Guide for BeginnersIn manufacturing and precision engineering, people often use the term “CNC machining.” But what does it really mean? This guide is for everyone.If you are a hobbyist, you can learn how people make parts.If you own a small business, you can explore new equipm
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What is CNC Machining? Guide for BeginnersIn manufacturing and precision engineering, people often use the term “CNC machining.” But what does it really mean? This guide is for everyone.If you are a hobbyist, you can learn how people make parts.If you own a small business, you can explore new equipm
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CNC Custom Machining vs. Traditional MachiningIn the world of manufacturing, the demand for custom nuts and bolts has never been higher. Industries like aerospace, automotive, construction, and medical devices depend on these small but important parts. They help ensure safety, performance, and struc
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Precision Stamping Parts: Applications, Custom SolutionsIn the manufacturing landscape, precision stamping parts and precision metal stamping parts stand as cornerstones of countless industries, driving efficiency, reliability, and innovation. The vehicles we drive and the appliances we use every da
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Customized CNC Machining Services: High-Quality Metal PartsIn the industrial manufacturing sector, many components opt for CNC parts. Hangzhou Shengpeng will design parts with the right shapes and strong mechanical properties.They will do this based on specific working conditions and design needs. T
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Hangzhou Shengpeng manufacturer supplies multi-size pin locks for trailer hitch pins (3/8 - 5/8 inches), with various coatings and customization services. In our daily life, in various fields such as trailer towing and rescue, pin locks for trailer hitch pins are core products that ensure the safety.
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Spring toggle, the optimal solution for high-quality, low-cost fasteners In numerous applications such as architectural renovation and furniture installation, the quality of fasteners directly impacts safety. Hangzhou Shengpeng As a professional metal fastener manufacturer in Hangzhou, we rely on 18
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Hangzhou stamping parts manufacturer. In the industrial manufacturing industry, custom-made metal stamping parts are regarded as key basic components. Their precision, quality and delivery efficiency directly affect the performance and production progress of downstream products.
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In the field of modern industrial production, the requirements for components are getting higher and higher. The current standard parts are difficult to meet the personalized demands of specific equipment or projects. Hangzhou Shengpeng's customized CNC machined parts are a key choice for solving pr
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How To Choose The Right Custom Hinge for Your Project
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In life, hinges play a crucial role. We can customize hinges according to specific size requirements and complete the samples within 7 days. Whether it's the heavy door panels of large industrial equipment or the delicate components of small and exquisite furniture. In terms of load-bearing capacity
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Today marks a significant milestone as I officially launched my business profile on Made-in-China.com, a renowned B2B e-commerce platform connecting global buyers with Chinese suppliers. This strategic move reflects our commitment to expanding market reach and fostering international trade partnersh
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