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-6290 N/A 9/16-18 N/A 3 3/4 in N/A 1 3/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6291 N/A 9/16-18 N/A 4 in N/A 1 3/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6292 N/A 9/16-18 N/A 4 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6293 N/A 9/16-18 N/A 5 in N/A 1 3/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6294 N/A 9/16-18 N/A 5 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6295 N/A 9/16-18 N/A 6 in N/A 1 5/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6296 N/A 9/16-18 N/A 6 1/2 in N/A 1 5/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6297 N/A 9/16-18 N/A 7 in N/A 1 5/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6298 N/A 9/16-18 N/A 7 1/2 in N/A 1 5/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6299 N/A 9/16-18 N/A 8 in N/A 1 5/8 in N/A Grade 8 N/A Plain N/A Fine Thread
pn-6300 N/A 9/16-18 N/A 1 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6301 N/A 9/16-18 N/A 1 1/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6302 N/A 9/16-18 N/A 1 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6303 N/A 9/16-18 N/A 1 3/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6304 N/A 9/16-18 N/A 2 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6305 N/A 9/16-18 N/A 2 1/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6306 N/A 9/16-18 N/A 2 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6307 N/A 9/16-18 N/A 2 3/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6308 N/A 9/16-18 N/A 3 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6309 N/A 9/16-18 N/A 3 1/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6310 N/A 9/16-18 N/A 3 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6311 N/A 9/16-18 N/A 3 3/4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6312 N/A 9/16-18 N/A 4 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6313 N/A 9/16-18 N/A 4 1/2 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
pn-6314 N/A 9/16-18 N/A 5 in N/A 1 3/8 in N/A Grade 8 N/A Zinc/Yellow N/A Fine Thread
Unit of Measure
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