► 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 - #0-80x1/4" - Imperial 304 Button Socket Screw UNF | 702003
    BBI - #0-80x1/4" - Imperial 304 Button Socket Screw UNF | 702003
    BBI - #0-80x1/4" - Imperial 304 Button Socket Screw UNF | 702003This BBI #0-80x1/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x1/4" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #0-80x3/16" - Imperial 304 Button Socket Screw UNF | 702002
    BBI - #0-80x3/16" - Imperial 304 Button Socket Screw UNF | 702002
    BBI - #0-80x3/16" - Imperial 304 Button Socket Screw UNF | 702002This BBI #0-80x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x3/16" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #0-80x1/8" - Imperial 304 Button Socket Screw UNF | 702001
    BBI - #0-80x1/8" - Imperial 304 Button Socket Screw UNF | 702001
    BBI - #0-80x1/8" - Imperial 304 Button Socket Screw UNF | 702001This BBI #0-80x1/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x1/8" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.50
    $0.50
  • Brighton Best - 1/2"-12x4" (PT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592908
    BBI - 1/2"-12x4" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592908
    BBI - 1/2"-12x4" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592908This BBI 1/2"-12x4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x4" Thread: BSW Grade: Grade 304 for...
    $74.72
    $74.72
  • Brighton Best - 1/2"-12x3" (PT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592907
    BBI - 1/2"-12x3" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592907
    BBI - 1/2"-12x3" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592907This BBI 1/2"-12x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x3" Thread: BSW Grade: Grade 304 for...
    $67.32
    $67.32
  • Brighton Best - 1/2"-12x2 1/2" (PT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592906
    BBI - 1/2"-12x2 1/2" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592906
    BBI - 1/2"-12x2 1/2" (Pt) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592906This BBI 1/2"-12x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x2 Thread: BSW Grade: Grade 304...
    $38.55
    $38.55
  • Brighton Best - 1/2"-12x2" (FT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592905
    BBI - 1/2"-12x2" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592905
    BBI - 1/2"-12x2" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592905This BBI 1/2"-12x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x2" Thread: BSW Grade: Grade 304 for...
    $28.15
    $28.15
  • Brighton Best - 1/2"-12x1 1/2" (FT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592904
    BBI - 1/2"-12x1 1/2" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592904
    BBI - 1/2"-12x1 1/2" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592904This BBI 1/2"-12x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x1 Thread: BSW Grade: Grade 304...
    $22.46
    $22.46
  • Brighton Best - 1/2"-12x1 1/4" (FT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592903
    BBI - 1/2"-12x1 1/4" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592903
    BBI - 1/2"-12x1 1/4" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592903This BBI 1/2"-12x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x1 Thread: BSW Grade: Grade 304...
    $22.97
    $22.97
  • Brighton Best - 1/2"-12x1" (FT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592902
    BBI - 1/2"-12x1" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592902
    BBI - 1/2"-12x1" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592902This BBI 1/2"-12x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x1" Thread: BSW Grade: Grade 304 for...
    $22.20
    $22.20
  • Brighton Best - 1/2"-12x3/4" (FT) BSW BS2470 - IMPERIAL 304 SOCKET HEAD CAP SCREW - BSW | 592901
    BBI - 1/2"-12x3/4" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592901
    BBI - 1/2"-12x3/4" (Ft) Bsw Bs2470 - Imperial 304 Socket Head Cap Screw - Bsw | 592901This BBI 1/2"-12x3/4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-12x3/4" Thread: BSW Grade: Grade 304 for...
    $22.01
    $22.01
  • BBI - 3/4"-16x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592725
    BBI - 3/4"-16x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592725
    BBI - 3/4"-16x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592725This BBI 3/4"-16x4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-16x4" Thread: UNF Grade: Grade 304 for reliable strength...
    $194.44
    $194.44
  • BBI - 3/4"-16x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592724
    BBI - 3/4"-16x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592724
    BBI - 3/4"-16x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592724This BBI 3/4"-16x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-16x3" Thread: UNF Grade: Grade 304 for reliable strength...
    $234.24
    $234.24
  • BBI - 3/4"-16x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592723
    BBI - 3/4"-16x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592723
    BBI - 3/4"-16x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592723This BBI 3/4"-16x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-16x2" Thread: UNF Grade: Grade 304 for reliable strength...
    $220.53
    $220.53
  • BBI - 3/4"-10x1" (Ft) UNC - Imperial 304 Socket Head Cap Screw UNC | 592722
    BBI - 3/4"-10x1" (Ft) UNC - Imperial 304 Socket Head Cap Screw UNC | 592722
    BBI - 3/4"-10x1" (Ft) UNC - Imperial 304 Socket Head Cap Screw UNC | 592722This BBI 3/4"-10x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 3/4"-10x1" Thread: UNC Grade: Grade 304 for reliable strength...
    $27.96
    $27.96
  • BBI - 5/8"-18x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592721
    BBI - 5/8"-18x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592721
    BBI - 5/8"-18x4" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592721This BBI 5/8"-18x4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-18x4" Thread: UNF Grade: Grade 304 for reliable strength...
    $92.99
    $92.99
  • BBI - 5/8"-18x3 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592720
    BBI - 5/8"-18x3 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592720
    BBI - 5/8"-18x3 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592720This BBI 5/8"-18x3 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-18x3 Thread: UNF Grade: Grade 304 for reliable...
    $91.47
    $91.47
  • BBI - 5/8"-18x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592719
    BBI - 5/8"-18x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592719
    BBI - 5/8"-18x3" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592719This BBI 5/8"-18x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-18x3" Thread: UNF Grade: Grade 304 for reliable strength...
    $41.82
    $41.82
  • BBI - 5/8"-18x2 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592718
    BBI - 5/8"-18x2 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592718
    BBI - 5/8"-18x2 1/2" (Pt) UNF - Imperial 304 Socket Head Cap Screw UNF | 592718This BBI 5/8"-18x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-18x2 Thread: UNF Grade: Grade 304 for reliable...
    $34.65
    $34.65
  • BBI - 5/8"-18x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592717
    BBI - 5/8"-18x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592717
    BBI - 5/8"-18x2" (Ft) UNF - Imperial 304 Socket Head Cap Screw UNF | 592717This BBI 5/8"-18x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 5/8"-18x2" Thread: UNF Grade: Grade 304 for reliable strength...
    $30.04
    $30.04

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