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 | 4.260 | 5.500 | 0.06 | 6 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.260 | 5.500 | 0.06 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.261 | 4.890 | 0.01 | 110 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.261 | 4.890 | 0.02 | 95 | Add to Quote | ||
| View | Low Carbon Steel - Case Hard | Plain | 4.312 | 7.875 | 0.125 | 13 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.345 | 5.498 | 0.135 | 32 | Add to Quote | ||
| View | Alloy Steel - Hard | Plain | 4.370 | 4.910 | 0.126 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.375 | 6.500 | 0.25 | 1 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.500 | 5.312 | 0.021 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.500 | 5.312 | 0.034 | 3 | Add to Quote | ||
| View | Alloy Steel - Hard | Plain | 4.520 | 5.500 | 0.188 | 27 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 4.606 | 5.515 | 0.134 | 10 | 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.
