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 6

Approved Vendor #4-40x5/8" Brass Socket Head Cap Screw SKU 9521 $3.40
Approved Vendor #4-40x7/8" 18-8 Button Head Socket Cap Screw Stainless Steel SKU 2534 $0.14
Approved Vendor #4-40x7/8" 18-8 Stainless Steel Flat Socket Head Cap Screws SKU 2641 $0.09
Approved Vendor #4-40x7/8" Alloy Button Socket Head Cap Screws Black Oxide SKU 9524 $0.18
Approved Vendor #4-40x7/8" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9525 $0.18
Approved Vendor #4-40x7/8" Alloy Socket Head Cap Screws Black Oxide SKU 9526 $0.18
Approved Vendor #4-48x1" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9541 $0.51
Approved Vendor #4-48x1" Alloy Socket Head Cap Screws Black Oxide SKU 9542 $0.37
Approved Vendor #4-48x1-1/2" Alloy Socket Head Cap Screws Black Oxide SKU 9543 $3.17
Approved Vendor #4-48x1-1/4" Alloy Socket Head Cap Screws Black Oxide SKU 9544 $0.43
Approved Vendor #4-48x1/2" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9545 $0.36
Approved Vendor #4-48x1/2" Alloy Socket Head Cap Screws Black Oxide SKU 9546 $0.24
Approved Vendor #4-48x1/4" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9547 $0.21
Approved Vendor #4-48x1/4" Alloy Socket Head Cap Screws Black Oxide SKU 9549 $0.25
Approved Vendor #4-48x3/4" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9552 $0.37
Approved Vendor #4-48x3/4" Alloy Socket Head Cap Screws Black Oxide SKU 9553 $0.28
Approved Vendor #4-48x3/8" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9554 $0.25
Approved Vendor #4-48x3/8" Alloy Socket Head Cap Screws Black Oxide SKU 9555 $0.24
Approved Vendor #4-48x5/8" Alloy Flat Socket Head Cap Screws Black Oxide SKU 9556 $0.36
Approved Vendor #4-48x5/8" Alloy Socket Head Cap Screws Black Oxide SKU 9557 $0.24
Approved Vendor #4-48x7/8" Alloy Socket Head Cap Screws Black Oxide SKU 9558 $0.28
Approved Vendor #6-32x1" 18-8 Stainless Steel Button Head Socket Cap Screws SKU 2543 $0.14
Approved Vendor #6-32x1" 18-8 Stainless Steel Flat Head Socket Cap Screws SKU 2649 $0.15
Approved Vendor #6-32x1" Alloy Button Head Socket Cap Screws Black Oxide SKU 10395 $0.18
Approved Vendor #6-32x1" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 10397 $0.47
Approved Vendor #6-32x1" Alloy Flat Head Socket Cap Screws Black Oxide SKU 10398 $0.18
Approved Vendor #6-32x1" Alloy Flat Head Socket Cap Screws Zinc Clear SKU 10399 $0.16
Approved Vendor #6-32x1" Alloy Socket Head Cap Screws Black Oxide SKU 10402 $0.20
Approved Vendor #6-32x1" Alloy Socket Head Cap Screws Zinc Clear SKU 10403 $0.21
Approved Vendor #6-32x1" Brass Flat Head Socket Cap Screw SKU 10407 $2.59
Approved Vendor #6-32x1" Brass Socket Head Cap Screw SKU 10410 $1.34
Approved Vendor #6-32x1" Low Socket Head Cap Screws Thermal Black Oxide SKU 10414 $0.78
Approved Vendor #6-32x1" Stainless Steel Cup Point Allen Socket Set Screw SKU 894 $0.39
Approved Vendor #6-32x1-1/2" Alloy Button Head Socket Cap Screws Black Oxide SKU 10425 $0.38
Approved Vendor #6-32x1-1/2" Alloy Flat Head Socket Cap Screws Black Oxide SKU 10426 $0.40
Approved Vendor #6-32x1-1/2" Alloy Socket Head Cap Screws Black Oxide SKU 10427 $0.43
Approved Vendor #6-32x1-1/2" Alloy Socket Head Cap Screws Zinc Clear SKU 10428 $0.30
Approved Vendor #6-32x1-1/4" Alloy Button Head Socket Cap Screws Black Oxide SKU 10439 $0.29
Approved Vendor #6-32x1-1/4" Alloy Flat Head Socket Cap Screws Black Oxide SKU 10440 $0.31
Approved Vendor #6-32x1-1/4" Alloy Socket Head Cap Screws Black Oxide SKU 10441 $0.24
Approved Vendor #6-32x1-1/4" Alloy Socket Head Cap Screws Zinc Clear SKU 10442 $0.27
Approved Vendor #6-32x1/2" 18-8 Stainless Steel Button Head Socket Cap Screws SKU 2539 $0.08
Approved Vendor #6-32x1/2" 18-8 Stainless Steel Flat Head Socket Cap Screws SKU 2645 $0.09
Approved Vendor #6-32x1/2" 18-8 Stainless Steel Low Head Socket Cap Screws SKU 2356 $0.17
Approved Vendor #6-32x1/2" Alloy Button Head Socket Cap Screws Black Oxide SKU 10457 $0.13
Approved Vendor #6-32x1/2" Alloy Button Head Socket Cap Screws Zinc Clear SKU 10458 $0.13
Approved Vendor #6-32x1/2" Alloy Cup Point Allen Socket Set Screw Black Oxide SKU 10460 $0.14
Approved Vendor #6-32x1/2" Alloy Flat Head Socket Cap Screws Black Oxide SKU 10461 $0.13

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