Socket Head Screws

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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 34

Approved Vendor M12-1.75x60 Class 12.9 Alloy Flat Socket Head Cap Screws Zinc SKU 408250 $375.07
Approved Vendor M12-1.75x60 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 748 $2.02
Approved Vendor M12-1.75x60 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 749 $4.15
Approved Vendor M12-1.75x60 Class 45H Cup Point Allen Socket Set Screws Black Oxide SKU 28860 $4.43
Approved Vendor M12-1.75x65 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 750 $2.33
Approved Vendor M12-1.75x70 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 576 $3.76
Approved Vendor M12-1.75x70 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 409200 $282.17
Approved Vendor M12-1.75x70 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 751 $2.39
Approved Vendor M12-1.75x70 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 752 $4.76
Approved Vendor M12-1.75x80 Class 10.9 Low Socket Head Cap Screws Thermal Black Oxide SKU 28886 $6.32
Approved Vendor M12-1.75x80 Class 12.9 Alloy Button Socket Head Cap Screws Black Oxide SKU 577 $4.36
Approved Vendor M12-1.75x80 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 410150 $245.42
Approved Vendor M12-1.75x90 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 411150 $271.31
Approved Vendor M12-1.75x90 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 756 $5.86
Approved Vendor M14-2.0x100 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 422100 $323.08
Approved Vendor M14-2.0x25 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 414300 $306.32
Approved Vendor M14-2.0x30 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 415300 $313.11
Approved Vendor M14-2.0x35 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 416250 $295.98
Approved Vendor M14-2.0x40 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 417250 $327.92
Approved Vendor M14-2.0x50 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 418200 $320.32
Approved Vendor M14-2.0x60 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 419200 $368.48
Approved Vendor M14-2.0x70 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 420150 $328.87
Approved Vendor M14-2.0x80 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 421150 $379.65
Approved Vendor M16 x 100MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26323 $39.49
Approved Vendor M16 x 120MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26324 $43.13
Approved Vendor M16 x 16MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1827 $36.10
Approved Vendor M16 x 20MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1828 $39.36
Approved Vendor M16 x 25MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1829 $40.76
Approved Vendor M16 x 30MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26317 $16.28
Approved Vendor M16 x 30MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1830 $43.02
Approved Vendor M16 x 40MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1783 $48.54
Approved Vendor M16 x 50MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26318 $20.95
Approved Vendor M16 x 50MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1784 $55.41
Approved Vendor M16 x 60MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26319 $23.92
Approved Vendor M16 x 60MM x M12-1.75 Allen Socket Stainless Steel Shoulder Bolts SKU 1785 $61.70
Approved Vendor M16 x 70MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26320 $26.43
Approved Vendor M16 x 80MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26321 $33.16
Approved Vendor M16 x 90MM x M12-1.75 Allen Socket Alloy Shoulder Bolts Black Oxide SKU 26322 $37.02
Approved Vendor M16-2.0x100 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 43875 $281.35
Approved Vendor M16-2.0x100 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 786 $6.25
Approved Vendor M16-2.0x100 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 787 $12.07
Approved Vendor M16-2.0x110 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 43975 $324.17
Approved Vendor M16-2.0x110 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 788 $7.28
Approved Vendor M16-2.0x110 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 789 $13.31
Approved Vendor M16-2.0x120 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 44075 $351.11
Approved Vendor M16-2.0x120 Class 12.9 Alloy Socket Head Cap Screws Black Oxide SKU 790 $7.88
Approved Vendor M16-2.0x120 Class 12.9 Alloy Socket Head Cap Screws Zinc Plated SKU 791 $14.14
Approved Vendor M16-2.0x150 Class 12.9 Alloy Flat Socket Head Cap Screws Black Oxide SKU 44170 $400.75

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