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 | Low Carbon Steel - Case Hard | Plain | 3.299 | 5.984 | 0.12 | 2603 | Add to Quote | ||
| View | Low Carbon Steel - Case Hard | Plain | 3.299 | 5.984 | 0.134 | 191 | Add to Quote | ||
| View | Alloy Steel - Hard | Plain | 3.312 | 5.062 | 0.375 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.360 | 4.210 | 0.022 | 5 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.375 | 4.000 | 0.375 | 6 | Add to Quote | ||
| View | Spring Steel - Hard | Zinc & Clear | 3.375 | 5.500 | 0.187 | 11 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.375 | 5.750 | 0.312 | 0 | Add to Quote | ||
| View | Alloy Steel - Hard | Plain | 3.375 | 5.750 | 0.375 | 3 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.375 | 6.000 | 0.25 | 8 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.400 | 4.387 | 0.089 | 21 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.406 | 5.000 | 0.25 | 0 | Add to Quote | ||
| View | Spring Steel - Hard | Plain | 3.428 | 3.937 | 0.11 | 110 | 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.
