We offer a large catalog of flat washers that are available in materials such as stainless steel, brass, nylon, copper, and bronze.
Hardened Washers
Hardened washers are precision-engineered flat washers, manufactured from carefully selected materials and heat-treated to enhance hardness and durability. The hardness of these washers makes them resistant to wear and able to handle heavy loads. They are ideal for use with high-strength bolts to ensure that assemblies maintain their integrity under very demanding conditions. Willie Washer offers a vast range of hardened parts, meeting industry standards such as ASTM F436 or the metric standard HV300, along with various OEM specifications. We also offer case-hardened washers, commonly available with a surface hardness of 15N 89. For applications that do not require specialized heat-treatment, we also maintain an extensive inventory of standard USS and SAE flat washers in a variety of materials available for immediate shipment.
| Material | Finish | Bolt Size (Metric) | Bolt Size (Standard) | Inside Diameter | Outside Diameter | Thickness | Quantity in Stock | Request a Quote | |
|---|---|---|---|---|---|---|---|---|---|
| View | Spring Steel - Hard | Plain | 3.437 | 4.500 | 0.134 | 13 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.468 | 4.093 | 0.179 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 4.000 | 0.02 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 4.250 | 0.182 | 2 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 4.250 | 0.187 | 22 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 4.500 | 0.134 | 14 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 5.000 | 0.074 | 52 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.500 | 6.000 | 0.25 | 10 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.531 | 7.750 | 0.049 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.540 | 4.375 | 0.01 | 0 | Add to Quote | ||
| View | Low Carbon Steel - Case Hard | Plain | 3.546 | 6.703 | 0.135 | 30 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.552 | 4.318 | 0.01 | 6 | Add to Quote |
Industries That Use Hardened Washers
Hardened washers are often used in the construction industries for projects that require high-strength bolts, like bridges or other steel structures. Hardened washers are also used in:
- Heavy equipment and machinery – for parts that are subjected to heavy loads or vibrations
- Automotive – for components like suspension systems or engine assemblies
- Industrial – to ensure precise assembly and load distribution
Request a Quote for Hardened Washers
Willie Washer is your trusted source for the hardened washers you require. Search our catalog, call us or fill out our contact form to request a quote or receive assistance with finding a hardened washer that meets your exact specifications.
