National Bolt & Nut Corp. - 1/4 - 5/8" Diameter Hex Head Cap Screw - Grade 8

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.

Unit of Measure

Items	Custom Custom Hex Head Cap Screw	pn-5591 Hex Head Cap Screw - Grade 8 - 1/4-20 x 1/2 - Plain	pn-5592 Hex Head Cap Screw - Grade 8 - 1/4-20 x 5/8 - Plain	pn-5593 Hex Head Cap Screw - Grade 8 - 1/4-20 x 3/4 - Plain	pn-5594 Hex Head Cap Screw - Grade 8 - 1/4-20 x 7/8 - Plain
Thread Size	N/A Custom	N/A 1/4-20	N/A 1/4-20	N/A 1/4-20	N/A 1/4-20
Length	N/A Custom	N/A 1/2 in	N/A 5/8 in	N/A 3/4 in	N/A 7/8 in
Thread Length	N/A Custom	N/A 3/4 in	N/A 3/4 in	N/A 3/4 in	N/A 3/4 in
Grade/Class	N/A	N/A Grade 8	N/A Grade 8	N/A Grade 8	N/A Grade 8
Finish	N/A Custom	N/A Plain	N/A Plain	N/A Plain	N/A Plain
Thread Style	N/A Custom	N/A Coarse Thread	N/A Coarse Thread	N/A Coarse Thread	N/A Coarse Thread
Weight / C	N/A	N/A 1.18 lb	N/A 1.31 lb	N/A 1.44 lb	N/A 1.57 lb