Tolerances are becoming progressively tighter across all industries. Modern machinery now functions at higher pressures, at greater speeds, and with more extreme temperatures in comparison to the past. A simple washer that is off by one-tenth of a millimeter can result in equipment failure. Precise parts from a reliable metal washers supplier are essential for critical applications.
An inferior metal washers supplier will provide parts with inconsistent dimensions, incorrect properties, or parts that fail when under stress. Production delays, equipment downtime, and safety are at risk. This guide contains what to look for when sourcing metal washers for demanding applications.
Top 5 Metal Washers Suppliers
TMNetch Chemical Etching

Since 2011, TMNetch has worked to become a leading provider of custom photochemical etched metal washers for tough applications all over the world. As a China-based custom metal washer supplier, TMNetch operates a high-quality factory that is ISO 9001:2015 certified and employs over 100 skilled workers with four fully automated photo etching tables.
Materials
TMNetch develops washers in a wide spectrum of metals:
Stainless Steel:
- 300 Series (304, 316) – Offers anti-corrosive properties for chemical and marine environments
- 400 Series (410, 430) – These washers are strong at elevated temperatures
Aluminum:
- Alloy 6061 and 5052 – Lightweight and offer great fatigue or stress resistance
Copper & Brass:
- Copper C11000 – Very high electrical and thermal conductivity
- Brass C26000 and C36000 – Good corrosion resistance and machinability
Specialty Alloys:
- Phosphor Bronze C51000 – Offers high load-bearing and durability wear potential
- Nickel Alloys N02200 and N04400 – Extreme (high) corrosion resistance for aerospace and chemical processing
Quality Control And Certifications
TMNetch is very committed to maintaining high-quality standards throughout production. The ISO 9001:2015 certification ensures their manufacturing processes are stable. They have invested in advanced facilities that comprise nineteen automated production systems that perform coating, exposure, and developing.
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Not every metal washers supplier will provide material certificates for a customer’s order or part, but TMNetch far exceeds that basic function. In fact, TMNetch will even supply parts in three days for true urgent projects while maintaining high-precision tolerances of just ± 0.025mm. With each order, TMNetch offers material traceability documents for global consumers with support products that have potential aerospace, semiconductor, or medical applications. Visit TMNetch today.
Würth Group
Würth Group is a top-tier metal washers supplier with the largest fastener distribution network in the world. As a global metal washers supplier, the company has over 125,000 active products, with a workforce of more than 87,000 workers serving worldwide markets.

Metal Washer Products
- Flat washers: DIN 125, DIN 9021, ISO 7089
- Lock washers: Split, tooted, serrated configurations
- Spring washers: Single and double coil options
- Speciality washers: Fender and structural washers with custom options
Materials Available
- Stainless steel (A2, A4 grades)
- Carbon steel with zinc plating
- Brass and copper alloys
- Aluminum alloys
As a trusted metal washers supplier with experience, they provide washers from 2mm to 100mm in diameter and washers with 0.5mm to 5mm thickness.
Bossard Group
With over 190 years of experience, Bossard Group is one of the industry’s leading suppliers of metal washers. Their extensive supply includes over a million fastening products, including washers, and employs more than 2,900 staff members worldwide.
Washer Specifications
- Tolerances: ±0.05mm to ±0.1mm depending on measurement method
- Thickness range: 0.3mm to 6mm
- Diameter range: M2 to M100
- Surface treatments: Zinc, nickel, phosphate, PTFE coating
Material Options
- Stainless steel 304, 316, 410
- Spring steel (hardened)
- Aluminum 5052, 6061
- Phosphor bronze
- Inconel for high-temperature applications
Being a certified metal washers supplier based on the ISO 9001: 2015 and industry-specific guidelines. With their SmartBin inventory system, you can track the usage of every washer in real time.
Fastenal
Fastenal is among North America’s leading providers of metal washers with over 690,000 available SKUs and an expansive branch network. As a full-service metal washer supplier, you can count on Fastenal if you need same-day or next-day delivery to over 25 countries, and for standard products.

This reputable metal washers supplier provides stock in materials, including:
- Carbon steel (grades 2, 5, 8)
- Stainless steel (18-8, 316)
- Hardened spring steel
Stanley Black & Decker (Stanley Engineered Fastening)
Stanley Engineered Fastening is a precision metal washers supplier to aerospace, automotive, and industrial applications. As a specialized washer supplier, the division maintains brands including Tucker and Nelson, providing critical fastening devices to demanding industries.

Capabilities
- Tolerances: ±0.025mm for critical applications
- Thickness: 0.1mm to 3mm
- Custom shapes and profiles
- Built-in assembly
Specialized Materials
- Aerospace-grade stainless (AMS specifications)
- Titanium alloys for weight savings
- Inconel 718 for high temperature
- 7075 Aluminum for aerospace
- Copper for electrical conductivity
Stanley’s certified metal washer supplier provides complete material traceability, with heat lot tracking. As an aerospace-grade metal washer supplier, Stanly provides 100% dimensional inspection for critical applications.
Factors to Consider When Choosing a Metal Washer Supplier
The choice of metal washers supplier is important for product reliability and efficiency of production. Consider these important aspects:
- Quality Certifications: Confirm they hold ISO 9001:2015 certification for quality management systems. In addition, look for industry-specific certifications such as AS9100 in aerospace, FDA compliance for medical products, or ITAR registration indicating their technical capabilities.
- Manufacturing Technology: Review their methods for manufacturing and processing (i.e., photochemical etching, stamping, laser cutting, etc.). More advanced production processes will offer tighter tolerances (±0.025mm or better).
- Material Capabilities: Verify they carry the materials you are looking for, typically including stainless steel series, aluminum alloys, copper, brass, or specialty metals. Material traceability certificates should also be requested if applicable.
- Customization: Examine continued capabilities for custom shapes, sizes, and specification options. Engineering support and design will offer significant value.
- Production Capacity: Understand lead times for both prototypes and production runs. Rush capabilities may apply and be communicated for times when products are required.
- Technical Support: Engineering response capability to assist with designs and problem-solving is important.
FAQs About Metal Washers Supplier
What are metal washers made of?
Metal washers are made from alloys of stainless steel, aluminum, brass, copper, phosphor bronze, or nickel. The choice of material will depend on the temperature range, corrosion exposure, and other specifications of your application. When buying washers from a trusted metal washers supplier, they will be able to provide you with certificates of material.
How thick is a washer?
General-use washers will range from 0.5mm to 3mm in thickness. Photochemically etched washers with tolerances as thin as 0.01mm and up to 1.5mm in thickness can be produced, but that will depend on your load requirements and assembly constraints. That said, there is a possibility of having any thickness for your application.
Is it better to repair or replace the washer?
You should always replace washers. A metal washer compresses during installation, and fatigue to the spring property has already occurred. If you reuse it, you will reduce the clamping force, and your connection will be loose. After the equipment fails, it costs more to replace it than just changing out the washer to begin with.
Where can I get a custom metal washer?
Just contact a metallic washer supplier. TMNetch, for example, builds custom washers based on your specifications, such as shape, slots, and patterns. Just provide your drawings for technical specifications, material, and quantity.
Conclusion
Choosing the right metal washers supplier can affect the reliability of your end product and the efficiency of production. TMNetch, a quality metal washers supplier of custom photochemically-etched stainless steel and non-stainless steel washers. Please contact TMNetch for technical support and quotes.
