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Sales Systems Limited Products and Services > Fasteners > Washers > Lock Washers > Heavy Helical Spring Lock Washers > Item # HHSLW03125XXX  
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Item # HHSLW03125XXX, Heavy Helical Spring Lock Washer, 0.322" I.D.

Dimensions are in inches.

Standard Stock Material
  • Carbon Steel
  • Stainless Steel
  • Phosphorus Bronze

Manufacturer  · Specifications  · Codes and Standards



Industrial Fasteners Institute




Unit of Measure


Nominal Washer Size

5/16 in

Nominal Washer Size (Decimal)

0.3125 in

Max. Inside Diameter (A)

0.322 in

Min. Inside Diameter (A)

0.314 in

Max. Outside Diameter (B)

0.593 in

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

0.097 in

Min. Section Width (W)

0.130 in

Min. Bearing Width (BW)

0.091 in


Carbon Steel
Phosphorus Bronze

Stainless Steel

Codes and Standards

Codes and Standards

ASME B18.21.1 1999

Distributor of Industry Standard and Military Specification Threaded Fasteners