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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  • Dimensions per ANSI B18.2.1
  • Metric thread also available as well as other materials and finishes. For further information, call or send an information request.
Square Head Bolts
Unit of Measure
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Item #

Thread Size

Length

Thread Length

Grade/Class

Finish

Thread Style

pn-3318 N/A 1 1/4-7 N/A 13 1/2 in N/A 3 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3319 N/A 1 1/4-7 N/A 14 in N/A 3 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3320 N/A 1 1/4-7 N/A 14 1/2 in N/A 3 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3321 N/A 1 1/4-7 N/A 15 in N/A 3 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3322 N/A 1 1/2-6 N/A 4 in N/A 3 1/4 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3323 N/A 1 1/2-6 N/A 5 in N/A 3 1/4 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3324 N/A 1 1/2-6 N/A 6 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3325 N/A 1 1/2-6 N/A 7 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3326 N/A 1 1/2-6 N/A 8 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3327 N/A 1 1/2-6 N/A 9 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3328 N/A 1 1/2-6 N/A 10 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3329 N/A 1 1/2-6 N/A 12 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3330 N/A 1 1/2-6 N/A 14 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
pn-3331 N/A 1 1/2-6 N/A 16 in N/A 3 1/2 in N/A Grade 5 N/A Plain N/A Coarse Thread
Unit of Measure
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