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The HT Allen Socket Cap Screw – UNF Series includes half‑threaded, black hex socket cap screws sized in 1/4" and 1/2" diameters with lengths ranging from 1/2" to 3". All items are manufactured to BS 18.3 (1936) specifications and feature a 12.9 grade strength. This category offers a selection of standard, readily available screws for typical industrial fastening tasks.

HT Allen Socket Cap Screw - UNF Series

30 products

HT Allen Hex Socket Cap Screw:1/2" x 1 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/2" x 1 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/2 1 1/2 F FT

HT Allen Hex Socket Cap Screw:1/2" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/2" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/2 1 F FT

HT Allen Hex Socket Cap Screw:1/2" x 2 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/2" x 2 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/2 2 1/2 F FT

HT Allen Hex Socket Cap Screw:1/2" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/2" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/2 3/4 F FT

HT Allen Hex Socket Cap Screw:1/2" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/2" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/2 3 F HT

HT Allen Hex Socket Cap Screw:1/4" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 1 1/4 F FT

HT Allen Hex Socket Cap Screw:1/4" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 1/2 F FT

HT Allen Hex Socket Cap Screw:1/4" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 1 F FT

HT Allen Hex Socket Cap Screw:1/4" x 2 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 2 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 2 1/2 F HT

HT Allen Hex Socket Cap Screw:1/4" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 3/4 F FT

HT Allen Hex Socket Cap Screw:1/4" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

1/4" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09121/4 3 F HT

HT Allen Hex Socket Cap Screw:3/16" x 1 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/16" x 1 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/16 1 1/2 F FT

HT Allen Hex Socket Cap Screw:3/16" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/16" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/16 1 1/4 F FT

HT Allen Hex Socket Cap Screw:3/16" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/16" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/16 1/2 F FT

HT Allen Hex Socket Cap Screw:3/16" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/16" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/16 1 F FT

HT Allen Hex Socket Cap Screw:3/16" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/16" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/16 3/4 F FT

HT Allen Hex Socket Cap Screw:3/8" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 1 1/4 F FT

HT Allen Hex Socket Cap Screw:3/8" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 1/2 F FT

HT Allen Hex Socket Cap Screw:3/8" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 1"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 1 F FT

HT Allen Hex Socket Cap Screw:3/8" x 2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 2 F FT

HT Allen Hex Socket Cap Screw:3/8" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 3/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 3/4 F FT

HT Allen Hex Socket Cap Screw:3/8" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

3/8" x 3"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09123/8 3 F HT

HT Allen Hex Socket Cap Screw:5/16" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

5/16" x 1 1/4"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09125/16 1 1/4 F FT

HT Allen Hex Socket Cap Screw:5/16" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

5/16" x 1/2"UNF - BS 18.3 (1936)/12.9/Black/Half Thread

High-tensile steel · 09125/16 1/2 F FT