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 37

Approved Vendor M4-0.7x12 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2862500 $160.92
Approved Vendor M4-0.7x12 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2872500 $178.59
Approved Vendor M4-0.7x12 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 603 $0.20
Approved Vendor M4-0.7x12 Class 45H Cup Point Allen Socket Set Screws Black Oxide SKU 28871 $0.17
Approved Vendor M4-0.7x14 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4672500 $208.23
Approved Vendor M4-0.7x14 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2882500 $160.92
Approved Vendor M4-0.7x14 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 604 $0.20
Approved Vendor M4-0.7x15 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 605 $0.17
Approved Vendor M4-0.7x16 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4682500 $211.23
Approved Vendor M4-0.7x16 Class 12.9 Alloy Button Socket Head Cap Screws Zinc SKU 4692500 $210.81
Approved Vendor M4-0.7x16 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2892500 $162.71
Approved Vendor M4-0.7x16 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2902500 $185.53
Approved Vendor M4-0.7x16 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 606 $0.21
Approved Vendor M4-0.7x16 Class 45H Cup Point Allen Socket Set Screws Black Oxide SKU 28870 $0.20
Approved Vendor M4-0.7x18 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 607 $0.18
Approved Vendor M4-0.7x20 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4702500 $219.43
Approved Vendor M4-0.7x20 Class 12.9 Alloy Button Socket Head Cap Screws Zinc SKU 4712500 $222.43
Approved Vendor M4-0.7x20 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2912500 $190.03
Approved Vendor M4-0.7x20 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2922500 $215.60
Approved Vendor M4-0.7x20 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 608 $0.19
Approved Vendor M4-0.7x20 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 609 $0.23
Approved Vendor M4-0.7x25 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4722500 $228.72
Approved Vendor M4-0.7x25 Class 12.9 Alloy Button Socket Head Cap Screws Zinc SKU 4732500 $233.03
Approved Vendor M4-0.7x25 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2932500 $225.42
Approved Vendor M4-0.7x25 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2942500 $256.69
Approved Vendor M4-0.7x25 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 610 $0.21
Approved Vendor M4-0.7x25 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 611 $0.25
Approved Vendor M4-0.7x30 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4742500 $254.65
Approved Vendor M4-0.7x30 Class 12.9 Alloy Button Socket Head Cap Screws Zinc SKU 4752500 $262.68
Approved Vendor M4-0.7x30 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2952500 $288.02
Approved Vendor M4-0.7x30 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2962500 $327.55
Approved Vendor M4-0.7x30 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 612 $0.24
Approved Vendor M4-0.7x30 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 613 $0.29
Approved Vendor M4-0.7x35 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4762500 $341.80
Approved Vendor M4-0.7x35 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2972500 $320.66
Approved Vendor M4-0.7x35 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 614 $0.33
Approved Vendor M4-0.7x40 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4772500 $359.95
Approved Vendor M4-0.7x40 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2982500 $360.85
Approved Vendor M4-0.7x40 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 615 $0.32
Approved Vendor M4-0.7x40 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 616 $0.38
Approved Vendor M4-0.7x50 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2992500 $493.04
Approved Vendor M4-0.7x50 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 617 $0.49
Approved Vendor M4-0.7x6 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4592500 $182.72
Approved Vendor M4-0.7x6 Class 12.9 Alloy Button Socket Head Cap Screws Zinc SKU 4602500 $174.40
Approved Vendor M4-0.7x6 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 2822500 $145.89
Approved Vendor M4-0.7x6 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 2832500 $158.94
Approved Vendor M4-0.7x6 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 598 $0.19
Approved Vendor M4-0.7x8 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 4612500 $183.44

More in Fasteners