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

Extra-Duty Helical Spring Lock Washer, 0.094" I.D.
Extra Duty Spring Lock Washer

Extra-Duty Helical Spring Lock Washer, 0.107" I.D.
Extra Duty Spring Lock Washer

Extra-Duty Helical Spring Lock Washer, 0.120" I.D.
Extra Duty Spring Lock Washer

Extra-Duty Helical Spring Lock Washer, 0.133" I.D.
Extra Duty Spring Lock Washer

Extra-Duty Helical Spring Lock Washer, 0.148" I.D.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Washers
Codes and Standards N/A ASME B18.21.1 1999
Unit of Measure N/A English
Nominal Washer Size N/A No. 2 N/A No. 3 N/A No. 4 N/A No. 5 N/A No. 6
Nominal Washer Size (Decimal) N/A 0.0860 in N/A 0.099 in N/A 0.1120 in N/A 0.1250 in N/A 0.1380 in
Max. Inside Diameter (A) N/A 0.094 in N/A 0.107 in N/A 0.120 in N/A 0.133 in N/A 0.148 in
Min. Inside Diameter (A) N/A 0.088 in N/A 0.101 in N/A 0.114 in N/A 0.127 in N/A 0.141 in
Max. Outside Diameter (B) N/A 0.208 in N/A 0.239 in N/A 0.253 in N/A 0.300 in N/A 0.314 in
Min. Mean Section Thickness (ti + to)/2 N/A 0.027 in N/A 0.034 in N/A 0.034 in N/A 0.045 in N/A 0.045 in
Min. Section Width (W) N/A 0.053 in N/A 0.062 in N/A 0.062 in N/A 0.079 in N/A 0.079 in
Min. Bearing Width (BW) N/A 0.037 in N/A 0.043 in N/A 0.043 in N/A 0.055 in N/A 0.055 in
Material N/A Carbon Steel Phosphorus Bronze Stainless Steel
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