General Characteristics

• Material: Unhardened carbon steel or stainless steel (varies by manufacturer)15.

• Finish: Zinc-plated or plain13.

• Standards: ANSI B18.22M (metric) or ASME B18.21.1 (USS/SAE)13.

Applications

• Primary Use: General-purpose fastening in machinery, automotive, and construction13.

• Specialized Roles: Vibration resistance, load distribution, and spacing37.

Key Features

• Metric Dimensions:

  • Inside Diameter: Varies by size (e.g., 1.6 mm to 36 mm)1.

  • Outside Diameter: Narrow, Regular, or Wide series (e.g., 4.00110.00 mm)1.

  • Thickness: Ranges from 0.508.50 mm1.

• SAE/USS Alternatives: Different dimensions (e.g., 3/4″” USS washer: 0.842″”0.805″” ID, 2.030″”1.993″” OD)37.

Additional Information

• Packaging: Standard quantities (e.g., 25250 pieces per sleeve/master pack)3.

• Special Notes: External diameters like 18.80/18.37 mm prevent use in coin-operated machines1.

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