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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  • National Bolt & Nut offers a series of 1/4 - 5/8 inch diameter hex head cap screws that meet ANSI B18.2.1 dimensional specifications. Our 1/4 - 5/8 inch diameter hex head cap screws are reliable fasteners for both construction and machinery parts.
  • All our premium 1/4 - 5/8 inch diameter hex head cap screws feature rolled threads. Our hex head cap screws measuring 1/4 - 1 1/2 inches meet SAE J429 standards for both material and physical properties, while our hex head cap screws measuring 1 3/4 - 2 inches (equivalent to Grade 8) meet ASTM A354 Grade BD standards for both material and physical properties.
  • Other materials and finishes available. For further information, call or send an information request.
Hex Head Cap Screw
Unit of Measure
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Item #

Thread Size

Length

Thread Length

Grade/Class

Finish

Thread Style

pn-6440 N/A 5/8-18 N/A 10 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6441 N/A 5/8-18 N/A 11 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6442 N/A 5/8-18 N/A 11 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6443 N/A 5/8-18 N/A 12 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6444 N/A 5/8-18 N/A 12 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6445 N/A 5/8-18 N/A 13 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6446 N/A 5/8-18 N/A 13 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6447 N/A 5/8-18 N/A 14 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6448 N/A 5/8-18 N/A 14 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6449 N/A 5/8-18 N/A 15 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6450 N/A 5/8-18 N/A 15 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6451 N/A 5/8-18 N/A 16 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6452 N/A 5/8-18 N/A 16 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6453 N/A 5/8-18 N/A 17 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6454 N/A 5/8-18 N/A 17 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6455 N/A 5/8-18 N/A 18 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6456 N/A 5/8-18 N/A 18 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6457 N/A 5/8-18 N/A 19 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6458 N/A 5/8-18 N/A 19 1/2 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6459 N/A 5/8-18 N/A 20 in N/A 1 3/4 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6460 N/A 5/8-18 N/A 1 in N/A 1 1/2 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6461 N/A 5/8-18 N/A 1 1/4 in N/A 1 1/2 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6462 N/A 5/8-18 N/A 1 1/2 in N/A 1 1/2 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6463 N/A 5/8-18 N/A 1 3/4 in N/A 1 1/2 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6464 N/A 5/8-18 N/A 2 in N/A 1 1/2 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
Unit of Measure
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