National Bolt & Nut Corporation
National Bolt & Nut Corporation
125 E. Commerce Drive
Schaumburg, IL 60173
Toll Free: 888.307.8811
Phone: 630.307.8800
Fax: 630.307.8870
Email: info@nationalbolt.com
Website: www.nationalbolt.com
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  • Helical spring lock washers possess a hardened bearing surface that allows for more uniform torque control, and harness greater bolt tension per unit of applied torque. Helical spring lock washers are one of the most common anti-loosening components used for a great variety of general industrial assemblies.
  • Constructed from hardened steel material, our helical spring lock washers meet ANSI B18.21.1 dimensional specifications and are equipped with a plain finish.
  • Other materials and finishes available. For further information, call or send an information request.
Helical Spring Lock Washers
Unit of Measure
1 2 3 4 

Item #

Size

Finish

Custom N/A Custom N/A Custom
pn-12135 N/A 1 5/8 in N/A Plain
pn-12136 N/A 1 3/4 in N/A Plain
pn-12137 N/A 2 in N/A Plain
pn-12138 N/A 2 1/4 in N/A Plain
pn-12139 N/A 2 1/2 in N/A Plain
pn-12140 N/A 3/16 in N/A Plain
pn-12141 N/A 1/4 in N/A Plain
pn-12142 N/A 5/16 in N/A Plain
pn-12143 N/A 3/8 in N/A Plain
pn-12144 N/A 7/16 in N/A Plain
pn-12145 N/A 1/2 in N/A Plain
pn-12146 N/A 9/16 in N/A Plain
pn-12147 N/A 5/8 in N/A Plain
pn-12148 N/A 3/4 in N/A Plain
pn-12149 N/A 7/8 in N/A Plain
pn-12150 N/A 1 in N/A Plain
pn-12151 N/A 1 1/8 in N/A Plain
pn-12152 N/A 1 1/4 in N/A Plain
pn-12153 N/A 1 3/8 in N/A Plain
pn-12154 N/A 1 1/2 in N/A Plain
pn-12155 N/A 3/16 in N/A Zinc/Clear
pn-12156 N/A 1/4 in N/A Zinc/Clear
pn-12157 N/A 5/16 in N/A Zinc/Clear
pn-12158 N/A 3/8 in N/A Zinc/Clear
Unit of Measure
1 2 3 4