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-4720 N/A 2-4 1/2 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4721 N/A 2-8 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4722 N/A 2 1/4-4 1/2 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4723 N/A 2 1/4-8 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4724 N/A 2 1/2-4 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4725 N/A 2 1/2-8 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4726 N/A 2 3/4-4 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4727 N/A 2 3/4-8 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4728 N/A 3-4 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4729 N/A 3-8 N/A Grade 2H N/A Plain N/A Coarse Thread
pn-4730 N/A 1/4-28 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4731 N/A 5/16-24 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4732 N/A 3/8-24 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4733 N/A 7/16-20 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4734 N/A 1/2-20 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4735 N/A 5/8-18 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4736 N/A 3/4-16 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4737 N/A 7/8-14 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4738 N/A 1-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4739 N/A 1-14 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4740 N/A 1 1/8-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4741 N/A 1 1/4-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4742 N/A 1 3/8-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4743 N/A 1 1/2-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4744 N/A 1 5/8-12 N/A Grade 2H N/A Plain N/A Fine Thread
Unit of Measure
1 2 3 4 5