► 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 - 1"-8x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11553
    BBI - 1"-8x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11553
    BBI - 1"-8x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11553This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x8 Thread: UNC Grade: Class 12.9 for reliable strength...
    $104.67
    $104.67
  • BBI - 1"-8x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11551
    BBI - 1"-8x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11551
    BBI - 1"-8x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11551This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x7 Thread: UNC Grade: Class 12.9 for reliable strength...
    $81.18
    $81.18
  • BBI - 1"-8x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11549
    BBI - 1"-8x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11549
    BBI - 1"-8x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11549This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x6-1/2 Thread: UNC Grade: Class 12.9 for reliable...
    $66.44
    $66.44
  • BBI - 1"-8x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11547
    BBI - 1"-8x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11547
    BBI - 1"-8x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11547This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x6 Thread: UNC Grade: Class 12.9 for reliable strength...
    $52.90
    $52.90
  • BBI - 1"-8x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11545
    BBI - 1"-8x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11545
    BBI - 1"-8x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11545This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x5-1/2 Thread: UNC Grade: Class 12.9 for reliable...
    $52.46
    $52.46
  • BBI - 1"-8x5" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11543
    BBI - 1"-8x5" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11543
    BBI - 1"-8x5" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11543This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x5 Thread: UNC Grade: Class 12.9 for reliable strength...
    $49.55
    $49.55
  • BBI - 1"-8x4 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11541
    BBI - 1"-8x4 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11541
    BBI - 1"-8x4 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11541This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x4-1/2 Thread: UNC Grade: Class 12.9 for reliable...
    $41.51
    $41.51
  • BBI - 1"-8x4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11539
    BBI - 1"-8x4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11539
    BBI - 1"-8x4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11539This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x4 Thread: UNC Grade: Class 12.9 for reliable strength...
    $38.87
    $38.87
  • BBI - 1"-8x3 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11537
    BBI - 1"-8x3 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11537
    BBI - 1"-8x3 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11537This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x3-1/2 Thread: UNC Grade: Class 12.9 for reliable...
    $34.11
    $34.11
  • BBI - 1"-8x3 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11535
    BBI - 1"-8x3 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11535
    BBI - 1"-8x3 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11535This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x3-1/4 Thread: UNC Grade: Class 12.9 for reliable...
    $30.37
    $30.37
  • BBI - 1"-8x3" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11533
    BBI - 1"-8x3" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11533
    BBI - 1"-8x3" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11533This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x3 Thread: UNC Grade: Class 12.9 for reliable strength...
    $28.40
    $28.40
  • BBI - 1"-8x2 3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11531
    BBI - 1"-8x2 3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11531
    BBI - 1"-8x2 3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11531This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x2-3/4 Thread: UNC Grade: Class 12.9 for reliable...
    $26.97
    $26.97
  • BBI - 1"-8x2 1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11529
    BBI - 1"-8x2 1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11529
    BBI - 1"-8x2 1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11529This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x2-1/2 Thread: UNC Grade: Class 12.9 for reliable...
    $26.21
    $26.21
  • BBI - 1"-8x2 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11527
    BBI - 1"-8x2 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11527
    BBI - 1"-8x2 1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11527This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x2-1/4 Thread: UNC Grade: Class 12.9 for reliable...
    $25.52
    $25.52
  • BBI - 1"-8x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11525
    BBI - 1"-8x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11525
    BBI - 1"-8x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11525This BBI is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1x2 Thread: UNC Grade: Class 12.9 for reliable strength...
    $23.84
    $23.84
  • BBI - 7/8"-9x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11523
    BBI - 7/8"-9x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11523
    BBI - 7/8"-9x8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11523This BBI 7/8"-9x8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/8"-9x8" Thread: UNC Grade: Class 12.9 for reliable...
    $101.48
    $101.48
  • BBI - 7/8"-9x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11521
    BBI - 7/8"-9x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11521
    BBI - 7/8"-9x7" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11521This BBI 7/8"-9x7" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/8"-9x7" Thread: UNC Grade: Class 12.9 for reliable...
    $63.13
    $63.13
  • BBI - 7/8"-9x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11519
    BBI - 7/8"-9x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11519
    BBI - 7/8"-9x6 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11519This BBI 7/8"-9x6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/8"-9x6 Thread: UNC Grade: Class 12.9 for...
    $58.73
    $58.73
  • BBI - 7/8"-9x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11517
    BBI - 7/8"-9x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11517
    BBI - 7/8"-9x6" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11517This BBI 7/8"-9x6" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/8"-9x6" Thread: UNC Grade: Class 12.9 for reliable...
    $49.25
    $49.25
  • BBI - 7/8"-9x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11515
    BBI - 7/8"-9x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11515
    BBI - 7/8"-9x5 1/2" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 11515This BBI 7/8"-9x5 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/8"-9x5 Thread: UNC Grade: Class 12.9 for...
    $39.71
    $39.71

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