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  • Dimensions are in inches.
  • Formerly designated Extra Heavy Helical Spring Lock Washers.
Standard Stock Material
  • Carbon Steel
  • Stainless Steel
  • Phosphorus Bronze
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Washers

Unit of Measure

English

Nominal Washer Size

13/16 in

Nominal Washer Size (Decimal)

0.8125 in

Max. Inside Diameter (A)

0.832 in

Min. Inside Diameter (A)

0.816 in

Max. Outside Diameter (B)

1.458 in

Min. Mean Section Thickness (ti + to)/2

0.261 in

Min. Section Width (W)

0.298 in

Min. Bearing Width (BW)

0.209 in

Material

Carbon Steel Phosphorus Bronze Stainless Steel

Codes and Standards

Codes and Standards

ASME B18.21.1 1999