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High-Quality Socket Cap Screws


High-Quality Custom & Standard Socket Cap Screws

What is a Socket Cap Screw?

A socket head cap screw is a specialized, high-precision headed and externally threaded fastener. Designed specifically for insertion through close-tolerance, internally tapped holes or properly mated with a corresponding nut, these fasteners are expertly engineered for highly secure, low-profile assembly. Manufactured from premium, industrial-grade materials, they deliver exceptionally reliable performance for both heavy machinery and commercial manufacturing applications.

Mechanical Advantages and Industrial Applications

Because of their internal drive and streamlined head profile, socket cap screws are the industry standard for specific structural and spatial scenarios:

  • Low-Clearance Assemblies: Their specialized design makes them perfect for tight-space applications requiring limited clearance, especially where standard external wrenches or socket tools simply cannot fit.
  • Thin Material Fastening: They are highly effective for securing delicate or compact assemblies where the mating parts may not be thick enough to be deeply counterbored.
  • Non-Critical Loading: They provide an excellent, secure hold for general manufacturing, machined parts, and die fixtures where extreme maximum loading capacity is not the primary critical factor.

Available Dimensions and Custom Materials

To guarantee you have the exact fastener required for your assembly line, U-Bolt-It maintains a massive inventory of socket cap screws. We offer standard coarse and fine thread sizes ranging from 2-56 x 3/16” through 1-1/2” x 12”, alongside a comprehensive selection of metric sizes. Our inventory is readily available in highly durable steel, corrosion-resistant stainless steel, and high-quality brass to perfectly meet your specific environmental demands.

Request a Quote Today

Have a question about our manufactured socket cap screws or need help selecting the perfect metric thread size for your close-tolerance assembly? Contact our team by using our secure online form to submit your project details. You can also give us a call today to speak directly with our fastener specialists. We look forward to speaking with you!

Types of Socket Cap Screws


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SKU NAME THREAD LENGTH DETAILS
MSHCSBLK0030008 M3-.5 X 8MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 8MM
MSHCSBLK0030010 M3-.5 X 10MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 10MM
MSHCSBLK0030012 M3-.5 X 12MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 12MM
MSHCSBLK0030016 M3-.5 X 16MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 16MM
MSHCSBLK0030018 M3-.5 X 18MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 18MM
MSHCSBLK0030020 M3-.5 X 20MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 20MM
MSHCSBLK0030025 M3-.5 X 25MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 25MM
MSHCSBLK0030030 M3-.5 X 30MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.5 30MM
MSHCSBLK0040006 M4-.7 X 6MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 6MM
MSHCSBLK0040008 M4-.7 X 8MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 8MM
MSHCSBLK0040010 M4-.7 X 10MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 10MM
MSHCSBLK0040012 M4-.7 X 12MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 12MM
MSHCSBLK0040016 M4-.7 X 16MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 16MM
MSHCSBLK0040018 M4-.7 X 18MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 18MM
MSHCSBLK0040020 M4-.7 X 20MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 20MM
MSHCSBLK0040025 M4-.7 X 25MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 25MM
MSHCSBLK0040030 M4-.7 X 30MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 30MM
MSHCSBLK0040035 M4-.7 X 35MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 35MM
MSHCSBLK0040040 M4-.7 X 40MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 40MM
MSHCSBLK0040050 M4-.7 X 50MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 50MM
MSHCSBLK0040120 M4-.7 X 120MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.7 120MM
MSHCSBLK0050008 M5-.8 X 8MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 8MM
MSHCSBLK0050010 M5-.8 X 10MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 10MM
MSHCSBLK0050012 M5-.8 X 12MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 12MM
MSHCSBLK0050016 M5-.8 X 16MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 16MM
MSHCSBLK0050018 M5-.8 X 18MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 18MM
MSHCSBLK0050020 M5-.8 X 20MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 20MM
MSHCSBLK0050022 M5-8 X 22 GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 22MM
MSHCSBLK0050025 M5-.8 X 25MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 25MM
MSHCSBLK0050030 M5-.8 X 30MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 30MM
MSHCSBLK0050035 M5-.8 X 35MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 35MM
MSHCSBLK0050040 M5-.8 X 40MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 40MM
MSHCSBLK0050050 M5-.8 X 50MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 50MM
MSHCSBLK0050060 M5-.8 X 60MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 60MM
MSHCSBLK0050080 M5 X .8 X 80MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 80MM
MSHCSBLK0050085 M5-.8 X 85MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 85MM
MSHCSBLK0050120 M5-.8 X 120MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 0.8 120MM
MSHCSBLK0060008 M6-1.0 X 8MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 8MM
MSHCSBLK0060010 M6-1.0 X 10MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 10MM
MSHCSBLK0060012 M6-1.0 X 12MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 12MM
MSHCSBLK0060014 M6-1.0 X 14MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 14MM
MSHCSBLK0060015 M6-1.0 X 15MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 15MM
MSHCSBLK0060016 M6-1.0 X 16MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 16MM
MSHCSBLK0060018 M6-1.0 X 18MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 18MM
MSHCSBLK0060020 M6-1.0 X 20MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 20MM
MSHCSBLK0060022 M6-1.0 X 22MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 22MM
MSHCSBLK0060025 M6-1.0 X 25MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 25MM
MSHCSBLK0060030 M6-1.0 X 30MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 30MM
MSHCSBLK0060040 M6-1.0 X 40MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 40MM
MSHCSBLK0060045 M6-1.0 X 45MM GRADE 12.9 SOCKET HEAD CAP SCREW BLACK 1 45MM