► 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 - 5/8"-11x2 1/4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592416
    BBI - 5/8"-11x2 1/4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592416
    BBI - 5/8"-11x2 1/4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592416This 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 304 for reliable strength...
    $13.76
    $13.76
  • BBI - 1/2"-20x3" UNF - Imperial 304 Socket Head Cap Screw UNF | 592415
    BBI - 1/2"-20x3" UNF - Imperial 304 Socket Head Cap Screw UNF | 592415
    BBI - 1/2"-20x3" UNF - Imperial 304 Socket Head Cap Screw UNF | 592415This BBI 1/2"-20x3" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x3" Thread: UNF Grade: Grade 304 for reliable strength Finish:...
    $19.39
    $19.39
  • BBI - 1/2"-20x2 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592413
    BBI - 1/2"-20x2 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592413
    BBI - 1/2"-20x2 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592413This BBI 1/2"-20x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x2 Thread: UNF Grade: Grade 304 for reliable strength...
    $15.63
    $15.63
  • BBI - 1/2"-20x2 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592411
    BBI - 1/2"-20x2 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592411
    BBI - 1/2"-20x2 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592411This BBI 1/2"-20x2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x2 Thread: UNF Grade: Grade 304 for reliable strength...
    $15.17
    $15.17
  • BBI - 1/2"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592409
    BBI - 1/2"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592409
    BBI - 1/2"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592409This BBI 1/2"-20x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x2" Thread: UNF Grade: Grade 304 for reliable strength Finish:...
    $10.55
    $10.55
  • BBI - 1/2"-20x1 3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592407
    BBI - 1/2"-20x1 3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592407
    BBI - 1/2"-20x1 3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592407This BBI 1/2"-20x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x1 Thread: UNF Grade: Grade 304 for reliable strength...
    $27.65
    $27.65
  • BBI - 1/2"-20x1 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592405
    BBI - 1/2"-20x1 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592405
    BBI - 1/2"-20x1 1/2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592405This BBI 1/2"-20x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x1 Thread: UNF Grade: Grade 304 for reliable strength...
    $7.84
    $7.84
  • BBI - 1/2"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592403
    BBI - 1/2"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592403
    BBI - 1/2"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592403This BBI 1/2"-20x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x1 Thread: UNF Grade: Grade 304 for reliable strength...
    $7.70
    $7.70
  • BBI - 1/2"-20x1" UNF - Imperial 304 Socket Head Cap Screw UNF | 592401
    BBI - 1/2"-20x1" UNF - Imperial 304 Socket Head Cap Screw UNF | 592401
    BBI - 1/2"-20x1" UNF - Imperial 304 Socket Head Cap Screw UNF | 592401This BBI 1/2"-20x1" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x1" Thread: UNF Grade: Grade 304 for reliable strength Finish:...
    $6.41
    $6.41
  • BBI - 1/2"-20x3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592397
    BBI - 1/2"-20x3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592397
    BBI - 1/2"-20x3/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592397This BBI 1/2"-20x3/4" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-20x3/4" Thread: UNF Grade: Grade 304 for reliable strength Finish:...
    $7.45
    $7.45
  • BBI - 7/16"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592396
    BBI - 7/16"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592396
    BBI - 7/16"-20x2" UNF - Imperial 304 Socket Head Cap Screw UNF | 592396This BBI 7/16"-20x2" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/16"-20x2" Thread: UNF Grade: Grade 304 for reliable strength Finish:...
    $16.29
    $16.29
  • BBI - 1/2"-13x8" UNC - Imperial 304 Socket Head Cap Screw UNC | 592395
    BBI - 1/2"-13x8" UNC - Imperial 304 Socket Head Cap Screw UNC | 592395
    BBI - 1/2"-13x8" UNC - Imperial 304 Socket Head Cap Screw UNC | 592395This BBI 1/2"-13x8" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x8" Thread: UNC Grade: Grade 304 for reliable strength Finish:...
    $83.92
    $83.92
  • BBI - 1/2"-13x7" UNC - Imperial 304 Socket Head Cap Screw UNC | 592393
    BBI - 1/2"-13x7" UNC - Imperial 304 Socket Head Cap Screw UNC | 592393
    BBI - 1/2"-13x7" UNC - Imperial 304 Socket Head Cap Screw UNC | 592393This BBI 1/2"-13x7" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x7" Thread: UNC Grade: Grade 304 for reliable strength Finish:...
    $55.73
    $55.73
  • BBI - 1/2"-13x6" UNC - Imperial 304 Socket Head Cap Screw UNC | 592389
    BBI - 1/2"-13x6" UNC - Imperial 304 Socket Head Cap Screw UNC | 592389
    BBI - 1/2"-13x6" UNC - Imperial 304 Socket Head Cap Screw UNC | 592389This BBI 1/2"-13x6" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x6" Thread: UNC Grade: Grade 304 for reliable strength Finish:...
    $38.20
    $38.20
  • BBI - 1/2"-13x5 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592387
    BBI - 1/2"-13x5 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592387
    BBI - 1/2"-13x5 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592387This BBI 1/2"-13x5 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x5 Thread: UNC Grade: Grade 304 for reliable strength...
    $22.38
    $22.38
  • BBI - 1/2"-13x5" UNC - Imperial 304 Socket Head Cap Screw UNC | 592385
    BBI - 1/2"-13x5" UNC - Imperial 304 Socket Head Cap Screw UNC | 592385
    BBI - 1/2"-13x5" UNC - Imperial 304 Socket Head Cap Screw UNC | 592385This BBI 1/2"-13x5" is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 1/2"-13x5" Thread: UNC Grade: Grade 304 for reliable strength Finish:...
    $19.09
    $19.09
  • BBI - 1/2"-13x4 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592383
    BBI - 1/2"-13x4 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592383
    BBI - 1/2"-13x4 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592383This 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 304 for reliable strength...
    $16.17
    $16.17
  • BBI - 1/2"-13x4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592381
    BBI - 1/2"-13x4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592381
    BBI - 1/2"-13x4" UNC - Imperial 304 Socket Head Cap Screw UNC | 592381This 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 304 for reliable strength Finish:...
    $13.10
    $13.10
  • BBI - 7/16"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592380
    BBI - 7/16"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592380
    BBI - 7/16"-20x1 1/4" UNF - Imperial 304 Socket Head Cap Screw UNF | 592380This BBI 7/16"-20x1 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: 7/16"-20x1 Thread: UNF Grade: Grade 304 for reliable strength...
    $7.05
    $7.05
  • BBI - 1/2"-13x3 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592379
    BBI - 1/2"-13x3 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592379
    BBI - 1/2"-13x3 1/2" UNC - Imperial 304 Socket Head Cap Screw UNC | 592379This 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 304 for reliable strength...
    $11.76
    $11.76

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