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 B18.2.2
  • Nylon inserts and Nuts with patches also available as an option on the Request for Information form.
  • Other materials and finishes available. For further information, call or send an information request.
Heavy Hex Jam Nuts
Unit of Measure
1 2 3 4 5 

Item #

Thread Size

Grade/Class

Finish

Thread Style

pn-4770 N/A 2 1/4-4 1/2 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4771 N/A 2 1/2-4 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4772 N/A 2 3/4-4 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4773 N/A 3-4 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4774 N/A 1/4-20 N/A N/A Plain N/A Coarse Thread
pn-4775 N/A 5/16-18 N/A N/A Plain N/A Coarse Thread
pn-4776 N/A 3/8-16 N/A N/A Plain N/A Coarse Thread
pn-4777 N/A 7/16-14 N/A N/A Plain N/A Coarse Thread
pn-4778 N/A 1/2-13 N/A N/A Plain N/A Coarse Thread
pn-4779 N/A 9/16-12 N/A N/A Plain N/A Coarse Thread
pn-4780 N/A 5/8-11 N/A N/A Plain N/A Coarse Thread
pn-4781 N/A 3/4-10 N/A N/A Plain N/A Coarse Thread
pn-4782 N/A 7/8-9 N/A N/A Plain N/A Coarse Thread
pn-4783 N/A 1-8 N/A N/A Plain N/A Coarse Thread
pn-4784 N/A 1 1/8-7 N/A N/A Plain N/A Coarse Thread
pn-4785 N/A 1 1/4-7 N/A N/A Plain N/A Coarse Thread
pn-4786 N/A 1 3/8-6 N/A N/A Plain N/A Coarse Thread
pn-4787 N/A 1 1/2-6 N/A N/A Plain N/A Coarse Thread
pn-4788 N/A 1 5/8-5 1/2 N/A N/A Plain N/A Coarse Thread
pn-4789 N/A 1 3/4-5 N/A N/A Plain N/A Coarse Thread
pn-4790 N/A 1 7/8-5 N/A N/A Plain N/A Coarse Thread
pn-4791 N/A 2-4 1/2 N/A N/A Plain N/A Coarse Thread
pn-4792 N/A 2 1/4-4 1/2 N/A N/A Plain N/A Coarse Thread
pn-4793 N/A 2 1/2-4 N/A N/A Plain N/A Coarse Thread
pn-4794 N/A 2 3/4-4 N/A N/A Plain N/A Coarse Thread
Unit of Measure
1 2 3 4 5