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Home   /   UNC Bolts, Nuts and Washers   /   Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel - ASME B18.2.1 / SAE J429

Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel - ASME B18.2.1 / SAE J429

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ASME B18.2.1, and includes an unthreaded section of the shaft. A hex drive permits a greater torque load to be applied to the joint over most other drive types.
Image of UNC Hex Head Bolts ASME B18.2.1 in BZP-G5 image
technical drawing of UNC Hex Head Bolts ASME B18.2.1
Technical Summary
d nominal diameter 1/4
tpi threads per inch 20
b nom. (inch) nominal thread length 0.750
k max. (inch) head height 0.188
s max. (inch) drive size 0.438
Standard ASME B18.2.1 / SAE J429
all dimensions in inches
Datasheet
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Description Sale Qtys Qty Price Breakdown Despatch Estimate
Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel
WF28290
£3.37
Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel   WF28290
£3.37
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technical drawing of UNC Hex Head Bolts ASME B18.2.1
Technical Summary
d nominal diameter 1/4
tpi threads per inch 20
b nom. (inch) nominal thread length 0.750
k max. (inch) head height 0.188
s max. (inch) drive size 0.438
Standard ASME B18.2.1 / SAE J429
all dimensions in inches
Datasheet
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