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

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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

nominal diameter

1/4

tpi

threads per inch

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			£2.98

Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel WF28290

£2.98

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