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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  • One of the most common types of flat washers, National Bolt & Nut’s Type A wide series USS flat washers possess a flat bearing surface underneath the fastener that more evenly distributes pressure. Designed to meet most industrial applications, ranging from maintenance to manufacturing and repair, USS flat washers help prevent a nut, bolt, or screw from pulling through the material. Our USS flat washers meet ANSI B18.22.1 dimensional specifications.
  • Other materials and finishes available. For further information, call or send an information request.
SAE Flat Washers
Unit of Measure
1 2 3 4 

Item #

Size

Finish

pn-12333 N/A 3/8 in N/A Plain
pn-12334 N/A 7/16 in N/A Plain
pn-12335 N/A 1/2 in N/A Plain
pn-12336 N/A 9/16 in N/A Plain
pn-12337 N/A 5/8 in N/A Plain
pn-12338 N/A 3/4 in N/A Plain
pn-12339 N/A 7/8 in N/A Plain
pn-12340 N/A 1 in N/A Plain
pn-12341 N/A 1 1/8 in N/A Plain
pn-12342 N/A 1 1/4 in N/A Plain
pn-12343 N/A 3/16 in N/A Zinc/Clear
pn-12344 N/A 1/4 in N/A Zinc/Clear
pn-12345 N/A 5/16 in N/A Zinc/Clear
pn-12346 N/A 3/8 in N/A Zinc/Clear
pn-12347 N/A 7/16 in N/A Zinc/Clear
pn-12348 N/A 1/2 in N/A Zinc/Clear
pn-12349 N/A 5/8 in N/A Zinc/Clear
pn-12350 N/A 3/4 in N/A Zinc/Clear
pn-12351 N/A 7/8 in N/A Zinc/Clear
pn-12352 N/A 1 in N/A Zinc/Clear
pn-12353 N/A 1/4 in N/A Zinc/Yellow
pn-12354 N/A 5/16 in N/A Zinc/Yellow
pn-12355 N/A 3/8 in N/A Zinc/Yellow
pn-12356 N/A 7/16 in N/A Zinc/Yellow
pn-12357 N/A 1/2 in N/A Zinc/Yellow
Unit of Measure
1 2 3 4