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-4745 N/A 1 3/4-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4746 N/A 1 7/8-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4747 N/A 2-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4748 N/A 2 1/4-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4749 N/A 2 1/2-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4750 N/A 2 3/4-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4751 N/A 3-12 N/A Grade 2H N/A Plain N/A Fine Thread
pn-4752 N/A 1/4-20 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4753 N/A 5/16-18 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4754 N/A 3/8-16 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4755 N/A 7/16-14 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4756 N/A 1/2-13 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4757 N/A 9/16-12 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4758 N/A 5/8-11 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4759 N/A 3/4-10 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4760 N/A 7/8-9 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4761 N/A 1-8 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4762 N/A 1 1/8-7 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4763 N/A 1 1/4-7 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4764 N/A 1 3/8-6 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4765 N/A 1 1/2-6 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4766 N/A 1 5/8-5 1/2 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4767 N/A 1 3/4-5 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4768 N/A 1 7/8-5 N/A Grade 5 N/A Plain N/A Coarse Thread
pn-4769 N/A 2-4 1/2 N/A Grade 5 N/A Plain N/A Coarse Thread
Unit of Measure
1 2 3 4 5