Socket Head Screws

2,000+ products

Expected delivery: Wed, Nov 18

Socket head screws are driven with a hex key, so they fit in tight spaces where a wrench cannot swing. Machine builders, tool and die shops and maintenance crews use them on fixtures, dies, motor mounts and guards. This section includes standard socket head cap screws, low head cap screws, button head and flat head socket screws, shoulder screws and set screws, in UNC, UNF and metric threads.

What to check before you order

Material. Black-oxide alloy steel is heat treated for high strength and is the usual choice for machinery. 18-8 and 316 stainless resist corrosion but are not as strong as alloy.
Head style. Standard heads give the most drive strength. Button heads have a low, rounded profile for guards and panels. Flat heads sit flush in an 82 degree countersink on inch screws and 90 degrees on metric.
Drive size. Check that your hex key set covers the drive. A worn key strips the socket, so replace keys that are rounded.
Set screw point. Cup point is the common choice for gripping a shaft. Flat point is used where the shaft will be adjusted often, and dog point locates in a hole or groove.

Common questions

How is a flat head socket screw measured?

Overall, from the top of the head to the tip, because the head sits flush with the surface.

See the fasteners category, machine screws for slotted and Phillips styles, and our thread sizes guide.

Socket Head Screws: page 30

Approved Vendor 7/16-14x1-1/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26342 $2.89
Approved Vendor 7/16-14x1-3/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26344 $4.45
Approved Vendor 7/16-14x1/2" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 31808 $0.56
Approved Vendor 7/16-14x1/2" Stainless Steel Cup Point Allen Socket Set Screw SKU 951 $0.91
Approved Vendor 7/16-14x2" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26345 $6.27
Approved Vendor 7/16-14x2-1/2" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26347 $4.16
Approved Vendor 7/16-14x2-1/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26346 $3.97
Approved Vendor 7/16-14x2-3/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26348 $6.10
Approved Vendor 7/16-14x3" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26349 $6.51
Approved Vendor 7/16-14x3/4" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 31810 $0.83
Approved Vendor 7/16-14x5/8" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 31809 $0.64
Approved Vendor 7/16-14x5/8" Stainless Steel Cup Point Allen Socket Set Screw SKU 952 $1.06
Approved Vendor 7/16-14x7/8" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 31811 $0.97
Approved Vendor 7/8-9x2" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26350 $19.44
Approved Vendor 7/8-9x2-1/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26351 $21.00
Approved Vendor 7/8-9x2-3/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26352 $23.00
Approved Vendor 7/8-9x3" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26353 $23.20
Approved Vendor 7/8-9x3-1/2" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26355 $24.74
Approved Vendor 7/8-9x3-1/4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26354 $25.96
Approved Vendor 7/8-9x4" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26356 $28.20
Approved Vendor 7/8-9x4-1/2" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26357 $30.43
Approved Vendor 7/8-9x5" Alloy Socket Head Cap Screws Black Oxide USA Made SKU 26358 $33.49
Approved Vendor Alloy Socket Head Cap Screws Zinc Clear Coarse Thread - 453 pcs SKU 31892 $162.98/pack of 6
Lenox BM Self Feed Set Screw SKU 433-1787605 $2.00
Approved Vendor M10 x 10MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1814 $12.88
Approved Vendor M10 x 12MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1815 $13.43
Approved Vendor M10 x 16MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26297 $4.89
Approved Vendor M10 x 16MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1817 $14.13
Approved Vendor M10 x 20MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26298 $5.28
Approved Vendor M10 x 20MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1816 $15.09
Approved Vendor M10 x 25MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26299 $5.86
Approved Vendor M10 x 25MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1818 $15.91
Approved Vendor M10 x 30MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26300 $6.48
Approved Vendor M10 x 30MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1819 $16.51
Approved Vendor M10 x 40MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26301 $7.33
Approved Vendor M10 x 40MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1821 $17.32
Approved Vendor M10 x 50MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26302 $8.11
Approved Vendor M10 x 60MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26303 $9.57
Approved Vendor M10 x 70MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26304 $11.38
Approved Vendor M10 x 80MM x M8-1.25 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26305 $11.97
Approved Vendor M10 x 8MM x M8-1.25 Allen Socket Stainless Steel Shoulder Bolts SKU 1813 $15.85
Approved Vendor M10-1.25x30 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 793 $1.30
Approved Vendor M10-1.50x40 Class 10.9 Low Socket Head Cap Screws Thermal Black Oxide SKU 28890 $2.45
Approved Vendor M10-1.5x100 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 562 $3.63
Approved Vendor M10-1.5x100 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 392200 $293.89
Approved Vendor M10-1.5x100 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 728 $2.61
Approved Vendor M10-1.5x110 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 393150 $249.52
Approved Vendor M10-1.5x110 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 729 $3.00

More in Fasteners