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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  • Top of hex corners removed for better Cotter Pin fit
  • 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.
Hex Castle Nuts
Unit of Measure
1 2 

Item #

Thread Size

Grade/Class

Finish

Thread Style

pn-5188 N/A 5/8-18 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5189 N/A 3/4-16 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5190 N/A 7/8-14 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5191 N/A 1-12 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5192 N/A 1-14 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5193 N/A 1 1/8-12 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5194 N/A 1 1/4-12 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5195 N/A 1 3/8-12 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5196 N/A 1 1/2-12 N/A Grade 5 N/A Zinc/Clear N/A Fine Thread
pn-5197 N/A 3/8-24 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5198 N/A 7/16-20 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5199 N/A 1/2-20 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5200 N/A 5/8-18 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5201 N/A 3/4-16 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5202 N/A 7/8-14 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5203 N/A 1-14 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5204 N/A 1 1/4-12 N/A Grade 5 N/A Zinc/Yellow N/A Fine Thread
pn-5205 N/A 1-12 N/A Carbon Steel N/A Plain N/A Fine Thread
Unit of Measure
1 2