Flat Washers
Flat washers, also known as plain washers or flat disks, are thin, flat, and generally circular in shape with a central hole. They are commonly used in various applications to distribute the load of a threaded fastener, such as a bolt or screw, over a larger surface area.
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ASME B18.21.1 Stainless Steel Plain WashersDetailDimension Table
Stainless steel flat washers are essential components in many mechanical and structural applications. They are used to distribute the load of a threaded fastener, such as a bolt or nut, over a larger surface area, preventing damage to the material being fastened. Stainless steel is often preferred for its corrosion resistance and durability, making it suitable for applications where exposure to moisture or harsh environments is a concern.
Nominal Washer Size Series Inside Diameter, A Outside Diameter, B Thickness, C Tolerance Tolerance Basic Plus Minus Basic Plus Minus Basic Max. Min. N0.0 0.060 Narrow 0.068 0.000 0.005 0.125 0.000 0.005 0.025 0.028 0.022 N0.0 0.060 Regular 0.068 0.000 0.005 0.188 0.000 0.005 0.025 0.028 0.022 N0.0 0.060 Wide 0.068 0.000 0.005 0.250 0.000 0.005 0.025 0.028 0.022 N0.1 0.073 Narrow 0.084 0.000 0.005 0.156 0.000 0.005 0.025 0.028 0.022 N0.1 0.073 Regular 0.084 0.000 0.005 0.219 0.000 0.005 0.025 0.028 0.022 N0.1 0.073 Wide 0.084 0.000 0.005 0.281 0.000 0.005 0.032 0.036 0.028 N0.2 0.086 Narrow 0.094 0.000 0.005 0.188 0.000 0.005 0.025 0.028 0.022 N0.2 0.086 Regular 0.094 0.000 0.005 0.250 0.000 0.005 0.025 0.028 0.022 N0.2 0.086 Wide 0.094 0.000 0.005 0.344 0.000 0.005 0.032 0.036 0.028 N0.3 0.099 Narrow 0.109 0.000 0.005 0.219 0.000 0.005 0.025 0.028 0.022 N0.3 0.099 Regular 0.109 0.000 0.005 0.312 0.000 0.005 0.032 0.036 0.028 N0.3 0.099 Wide 0.109 0.008 0.005 0.409 0.008 0.005 0.040 0.045 0.036 N0.4 0.112 Narrow 0.125 0.000 0.005 0.250 0.000 0.005 0.032 0.036 0.028 N0.4 0.112 Regular 0.125 0.008 0.005 0.375 0.008 0.005 0.040 0.045 0.036 N0.4 0.112 Wide 0.125 0.008 0.005 0.438 0.008 0.005 0.040 0.045 0.036 N0.5 0.125 Narrow 1.141 0.000 0.005 0.281 0.000 0.005 0.032 0.036 0.028 N0.5 0.125 Regular 1.141 0.008 0.005 0.406 0.008 0.005 0.040 0.045 0.036 N0.5 0.125 Wide 1.141 0.008 0.005 0.500 0.008 0.005 0.040 0.045 0.036 N0.6 0.138 Narrow 0.156 0.000 0.005 0.312 0.000 0.005 0.032 0.036 0.028 N0.6 0.138 Regular 0.156 0.008 0.005 0.438 0.008 0.005 0.040 0.045 0.036 N0.6 0.138 Wide 0.156 0.008 0.005 0.562 0.008 0.005 0.040 0.045 0.036 N0.8 0.164 Narrow 0.188 0.008 0.005 0.375 0.008 0.005 0.040 0.045 0.036 N0.8 0.164 Regular 0.188 0.008 0.005 0.500 0.008 0.005 0.040 0.045 0.036 N0.8 0.164 Wide 0.188 0.008 0.005 0.625 0.015 0.005 0.063 0.071 0.056 N0.10 0.190 Narrow 0.203 0.008 0.005 0.406 0.008 0.005 0.040 0.045 0.036 N0.10 0.190 Regular 0.203 0.008 0.005 0.562 0.008 0.005 0.040 0.045 0.036 N0.10 0.190 Wide 0.203 0.008 0.005 0.734 0.015 0.007 0.063 0.071 0.056 N0.12 0.216 Narrow 0.234 0.008 0.005 0.438 0.008 0.005 0.040 0.045 0.036 N0.12 0.216 Regular 0.234 0.008 0.005 0.625 0.015 0.005 0.063 0.071 0.056 N0.12 0.216 Wide 0.234 0.008 0.005 0.875 0.015 0.007 0.063 0.071 0.056 1/4 0.250 Narrow 0.281 0.105 0.005 0.500 0.015 0.005 0.063 0.071 0.056 1/4 0.250 Regular 0.281 0.105 0.005 0.734 0.015 0.007 0.063 0.071 0.056 1/4 0.250 Wide 0.281 0.105 0.005 1.000 0.015 0.007 0.063 0.071 0.056
