► 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 - 1/4"-20x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581074
    BBI - 1/4"-20x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581074
    BBI - 1/4"-20x2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581074This BBI 1/4"-20x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/4"-20x2" Thread: UNC Grade: Class 12.9 for reliable...
    $0.91
    $0.91
  • BBI - #2-64x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581072
    BBI - #2-64x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581072
    BBI - #2-64x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581072This BBI #2-64x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x1" Thread: UNF Grade: Class 12.9 for reliable...
    $2.33
    $2.33
  • BBI - #2-64x3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581070
    BBI - #2-64x3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581070
    BBI - #2-64x3/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581070This BBI #2-64x3/4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x3/4" Thread: UNF Grade: Class 12.9 for reliable...
    $1.25
    $1.25
  • BBI - #2-64x5/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581068
    BBI - #2-64x5/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581068
    BBI - #2-64x5/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581068This BBI #2-64x5/8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x5/8" Thread: UNF Grade: Class 12.9 for reliable...
    $1.18
    $1.18
  • BBI - 1 1/8"-7x16" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581067
    BBI - 1 1/8"-7x16" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581067
    BBI - 1 1/8"-7x16" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581067This BBI 1/8"-7x16" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x16" Thread: UNC Grade: Class 12.9 for...
    $557.19
    $557.19
  • BBI - #2-64x1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581066
    BBI - #2-64x1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581066
    BBI - #2-64x1/2" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581066This BBI #2-64x1/2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x1/2" Thread: UNF Grade: Class 12.9 for reliable...
    $1.07
    $1.07
  • BBI - 1 1/8"-7x15" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581065
    BBI - 1 1/8"-7x15" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581065
    BBI - 1 1/8"-7x15" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581065This BBI 1/8"-7x15" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x15" Thread: UNC Grade: Class 12.9 for...
    $476.76
    $476.76
  • BBI - #2-64x3/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581064
    BBI - #2-64x3/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581064
    BBI - #2-64x3/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581064This BBI #2-64x3/8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x3/8" Thread: UNF Grade: Class 12.9 for reliable...
    $1.01
    $1.01
  • BBI - 1 1/8"-7x14" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581063
    BBI - 1 1/8"-7x14" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581063
    BBI - 1 1/8"-7x14" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581063This BBI 1/8"-7x14" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x14" Thread: UNC Grade: Class 12.9 for...
    $457.94
    $457.94
  • BBI - #2-64x5/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581062
    BBI - #2-64x5/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581062
    BBI - #2-64x5/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581062This BBI #2-64x5/16" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x5/16" Thread: UNF Grade: Class 12.9 for reliable...
    $0.94
    $0.94
  • BBI - #2-56x5/32" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581061
    BBI - #2-56x5/32" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581061
    BBI - #2-56x5/32" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581061This BBI #2-56x5/32" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-56x5/32" Thread: UNC Grade: Class 12.9 for reliable...
    $1.48
    $1.48
  • BBI - #2-64x1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581060
    BBI - #2-64x1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581060
    BBI - #2-64x1/4" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581060This BBI #2-64x1/4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x1/4" Thread: UNF Grade: Class 12.9 for reliable...
    $0.92
    $0.92
  • BBI - 1 1/8"-7x13" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581059
    BBI - 1 1/8"-7x13" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581059
    BBI - 1 1/8"-7x13" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581059This BBI 1/8"-7x13" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x13" Thread: UNC Grade: Class 12.9 for...
    $435.93
    $435.93
  • BBI - #2-64x3/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581058
    BBI - #2-64x3/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581058
    BBI - #2-64x3/16" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581058This BBI #2-64x3/16" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x3/16" Thread: UNF Grade: Class 12.9 for reliable...
    $0.85
    $0.85
  • BBI - 1 1/8"-7x12" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581057
    BBI - 1 1/8"-7x12" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581057
    BBI - 1 1/8"-7x12" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581057This BBI 1/8"-7x12" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x12" Thread: UNC Grade: Class 12.9 for...
    $389.20
    $389.20
  • BBI - #2-64x1/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581056
    BBI - #2-64x1/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581056
    BBI - #2-64x1/8" (Ft) - Imperial Socket Head Cap Screw Thermal Black Oxide UNF | 581056This BBI #2-64x1/8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-64x1/8" Thread: UNF Grade: Class 12.9 for reliable...
    $0.83
    $0.83
  • BBI - 1 1/8"-7x11" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581055
    BBI - 1 1/8"-7x11" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581055
    BBI - 1 1/8"-7x11" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581055This BBI 1/8"-7x11" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/8"-7x11" Thread: UNC Grade: Class 12.9 for...
    $368.41
    $368.41
  • BBI - #2-56x1 1/4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581053
    BBI - #2-56x1 1/4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581053
    BBI - #2-56x1 1/4" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581053This BBI #2-56x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-56x1 Thread: UNC Grade: Class 12.9 for...
    $4.66
    $4.66
  • BBI - #2-56x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581051
    BBI - #2-56x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581051
    BBI - #2-56x1" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581051This BBI #2-56x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-56x1" Thread: UNC Grade: Class 12.9 for reliable...
    $3.72
    $3.72
  • BBI - #2-56x7/8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581049
    BBI - #2-56x7/8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581049
    BBI - #2-56x7/8" (Pt) - Imperial Socket Head Cap Screw Thermal Black Oxide UNC | 581049This BBI #2-56x7/8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: #2-56x7/8" Thread: UNC Grade: Class 12.9 for reliable...
    $3.51
    $3.51

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