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
Print Back
  • 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-12308 N/A 1/4 in N/A Zinc/Clear
pn-12309 N/A 5/16 in N/A Zinc/Clear
pn-12310 N/A 3/8 in N/A Zinc/Clear
pn-12311 N/A 7/16 in N/A Zinc/Clear
pn-12312 N/A 1/2 in N/A Zinc/Clear
pn-12313 N/A 9/16 in N/A Zinc/Clear
pn-12314 N/A 5/8 in N/A Zinc/Clear
pn-12315 N/A 3/4 in N/A Zinc/Clear
pn-12316 N/A 7/8 in N/A Zinc/Clear
pn-12317 N/A 1 in N/A Zinc/Clear
pn-12318 N/A 1 1/8 in N/A Zinc/Clear
pn-12319 N/A 1 1/4 in N/A Zinc/Clear
pn-12320 N/A 1 3/8 in N/A Zinc/Clear
pn-12321 N/A 1 1/2 in N/A Zinc/Clear
pn-12322 N/A 1 5/8 in N/A Zinc/Clear
pn-12323 N/A 1 3/4 in N/A Zinc/Clear
pn-12324 N/A 1 7/8 in N/A Zinc/Clear
pn-12325 N/A 2 in N/A Zinc/Clear
pn-12326 N/A 2 1/4 in N/A Zinc/Clear
pn-12327 N/A 2 1/2 in N/A Zinc/Clear
pn-12328 N/A 2 3/4 in N/A Zinc/Clear
pn-12329 N/A 3 in N/A Zinc/Clear
pn-12330 N/A 3/16 in N/A Plain
pn-12331 N/A 1/4 in N/A Plain
pn-12332 N/A 5/16 in N/A Plain
Unit of Measure
1 2 3 4