Home / UNF Bolts, Nuts and Washers / 1/2 inch Unbrako UNF Socket Head Cap Screws ASME B18.3 / ASTM A574 in Black Oxide (Self Colour) Finished Steel

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1/2 inch Unbrako UNF Socket Head Cap Screws ASME B18.3 / ASTM A574 in Black Oxide (Self Colour) Finished Steel

Also known as an allen screw or allen bolt, or simply a cap screw. Socket head cap screws are a modern machine threaded fastener, an alternative to the standard hexagon headed bolt. The geometry of the hex drive mechanism means that these internal contact surfaces are protected from external damage. A hex or allen key is therefore required to fit these fasteners. Conforming to ASME B18.3 and material to ASTM A574, UNBRAKO® socket head caps are manufactured to be stronger than other size for size high tensile versions. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Minimum tensile strength of UNBRAKO® socket head caps is minimum 180,000psi which is similar to metric property class 12.9.

Unbrako UNF Socket Head Cap Screws ASME B18.3 / ASTM A574 in BO image

technical drawing of Unbrako UNF Socket Head Cap Screws ASME B18.3 / ASTM A574

Technical Summary

nominal diameter

1/2

tpi

threads per inch

minimum thread length

1.50

head diameter

0.750

k max.

maximum head height

0.500

t min.

minimum recess depth

0.245

drive size

3/8

Standard

ASME B18.3/BS 2470

all dimensions in inches

Unbrako Engineering Guide

< View All Sizes

Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
1/2 x 1 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide WF48826			£0.00
1/2 x 1-1/4 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide WF48827			£0.00
1/2 x 1-1/2 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide WF48828			£0.00
1/2 x 1-3/4 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide WF48829			£0.00
1/2 x 2 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide WF48830			£0.00
1/2 x 2-1/4 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide WF48831			£0.00
1/2 x 2-1/2 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide WF48832			£0.00
1/2 x 3 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide WF48833			£0.00
1/2 x 4 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide WF48834			£0.00

1/2 x 1 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide
WF48826

1/2 x 1-1/4 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide
WF48827

1/2 x 1-1/2 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide
WF48828

1/2 x 1-3/4 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide
WF48829

1/2 x 2 inch UNF Unbrako Socket Cap Allen Screw Full Thread in Black Oxide
WF48830

1/2 x 2-1/4 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide
WF48831

1/2 x 2-1/2 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide
WF48832

1/2 x 3 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide
WF48833

1/2 x 4 inch UNF Unbrako Socket Cap Allen Screw Part Thread in Black Oxide
WF48834

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