► Socket Screws

Socket Screws – Fasteners for Precision Assembly & High-Torque Applications Socket screws, also known as Allen screws or hex socket screws, are designed for high-strength, precision fastening in machinery, fabrication, & equipment assembly. With internal hex drives, they enable tight installation in confined spaces & deliver superior torque transfer. Available...

Socket Screws – Fasteners for Precision Assembly & High-Torque Applications

Socket screws, also known as Allen screws or hex socket screws, are designed for high-strength, precision fastening in machinery, fabrication, & equipment assembly. With internal hex drives, they enable tight installation in confined spaces & deliver superior torque transfer. Available in cap head, button head, & countersunk varieties, our socket screws are ideal for mechanical repairs, tooling setups, & metalwork builds.

What’s in This Collection:
► Socket cap screws for strong mechanical joints
► Button head & countersunk options for low-profile assembly
► Metric & imperial sizes in alloy, stainless, & black oxide
► Precision-machined threads for accurate fit
► Bulk packs for manufacturing & repair workshops

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  • BBI - 3/4"-10x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14157
    BBI - 3/4"-10x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14157
    BBI - 3/4"-10x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14157This BBI 3/4"-10x4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-10x4" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $73.79
    $73.79
  • BBI - 3/4"-10x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14156
    BBI - 3/4"-10x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14156
    BBI - 3/4"-10x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14156This BBI 3/4"-10x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-10x3" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $62.66
    $62.66
  • BBI - 3/4"-10x2 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14155
    BBI - 3/4"-10x2 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14155
    BBI - 3/4"-10x2 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14155This BBI 3/4"-10x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-10x2 Thread: UNC Grade: Grade 316 for reliable strength...
    $42.75
    $42.75
  • BBI - 3/4"-10x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14154
    BBI - 3/4"-10x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14154
    BBI - 3/4"-10x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14154This BBI 3/4"-10x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-10x2" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $40.80
    $40.80
  • BBI - 5/8"-11x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14153
    BBI - 5/8"-11x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14153
    BBI - 5/8"-11x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14153This BBI 5/8"-11x3 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x3 Thread: UNC Grade: Grade 316 for reliable strength...
    $38.51
    $38.51
  • BBI - 5/8"-11x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14152
    BBI - 5/8"-11x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14152
    BBI - 5/8"-11x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14152This BBI 5/8"-11x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x3" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $24.69
    $24.69
  • BBI - 5/8"-11x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14151
    BBI - 5/8"-11x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14151
    BBI - 5/8"-11x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14151This BBI 5/8"-11x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x2 Thread: UNC Grade: Grade 316 for reliable strength...
    $21.85
    $21.85
  • BBI - 5/8"-11x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14150
    BBI - 5/8"-11x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14150
    BBI - 5/8"-11x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14150This BBI 5/8"-11x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x2" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $19.36
    $19.36
  • BBI - 5/8"-11x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14149
    BBI - 5/8"-11x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14149
    BBI - 5/8"-11x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14149This BBI 5/8"-11x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $19.09
    $19.09
  • BBI - 5/8"-11x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14147
    BBI - 5/8"-11x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14147
    BBI - 5/8"-11x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14147This BBI 5/8"-11x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $16.16
    $16.16
  • BBI - 1/2"-13x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14146
    BBI - 1/2"-13x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14146
    BBI - 1/2"-13x4" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14146This BBI 1/2"-13x4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x4" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $29.48
    $29.48
  • BBI - 1/2"-13x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14144
    BBI - 1/2"-13x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14144
    BBI - 1/2"-13x3 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14144This BBI 1/2"-13x3 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x3 Thread: UNC Grade: Grade 316 for reliable strength...
    $23.40
    $23.40
  • BBI - 5/8"-11x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14145
    BBI - 5/8"-11x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14145
    BBI - 5/8"-11x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14145This BBI 5/8"-11x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-11x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $14.89
    $14.89
  • BBI - 1/2"-13x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14143
    BBI - 1/2"-13x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14143
    BBI - 1/2"-13x3" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14143This BBI 1/2"-13x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x3" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $13.68
    $13.68
  • BBI - 1/2"-13x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14142
    BBI - 1/2"-13x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14142
    BBI - 1/2"-13x2 1/2" (Pt) - Imperial 316 Socket Head Cap Screw UNC | 14142This BBI 1/2"-13x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x2 Thread: UNC Grade: Grade 316 for reliable strength...
    $13.45
    $13.45
  • BBI - 1/2"-13x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14141
    BBI - 1/2"-13x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14141
    BBI - 1/2"-13x2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14141This BBI 1/2"-13x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x2" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $9.95
    $9.95
  • BBI - 1/2"-13x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14140
    BBI - 1/2"-13x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14140
    BBI - 1/2"-13x1 3/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14140This BBI 1/2"-13x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $6.68
    $6.68
  • BBI - 1/2"-13x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14139
    BBI - 1/2"-13x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14139
    BBI - 1/2"-13x1 1/2" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14139This BBI 1/2"-13x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $6.50
    $6.50
  • BBI - 1/2"-13x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14138
    BBI - 1/2"-13x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14138
    BBI - 1/2"-13x1 1/4" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14138This BBI 1/2"-13x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x1 Thread: UNC Grade: Grade 316 for reliable strength...
    $6.40
    $6.40
  • BBI - 1/2"-13x1" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14137
    BBI - 1/2"-13x1" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14137
    BBI - 1/2"-13x1" (Ft) - Imperial 316 Socket Head Cap Screw UNC | 14137This BBI 1/2"-13x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x1" Thread: UNC Grade: Grade 316 for reliable strength Finish:...
    $6.10
    $6.10

Precision Fastening That Delivers

From fabrication tables to engine components, our socket screws deliver tight, high-strength fastening in every rotation. Trust them in builds where clearance, durability, & reliability matter.

► High-torque drive for confident, flush installation

► Ideal for machine tools, robotics & structural assemblies

► Available in corrosion-resistant & black finishes

Frequently Asked Questions

Socket screws allow for high clamping force in tighter spaces with internal drive heads, making them ideal for machine assembly & compact builds.

Absolutely. Their high tensile strength & precision fit make them a go-to fastener for tools, engines, & equipment.

Yes. We offer stainless socket screws for corrosion resistance & outdoor use, along with alloy steel options for heavy-duty strength.

Brands

BBI

BBI
Bremick

Bremick
Champion

Champion
EHI

EHI
Excision

Excision
Hobsons

Hobsons
Rally

Rally