► 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 - M24-3.00x80mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549334
    BBI - M24-3.00x80mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549334
    BBI - M24-3.00x80mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549334This BBI M24 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M24 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $109.12
    $109.12
  • BBI - M24-3.00x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549332
    BBI - M24-3.00x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549332
    BBI - M24-3.00x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549332This BBI M24 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M24 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $78.59
    $78.59
  • BBI - M24-3.00x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549331
    BBI - M24-3.00x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549331
    BBI - M24-3.00x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549331This BBI M24 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M24 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $73.64
    $73.64
  • BBI - M20-2.50x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549312
    BBI - M20-2.50x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549312
    BBI - M20-2.50x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549312This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $91.65
    $91.65
  • BBI - M20-2.50x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549311
    BBI - M20-2.50x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549311
    BBI - M20-2.50x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549311This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $112.87
    $112.87
  • BBI - M20-2.50x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549310
    BBI - M20-2.50x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549310
    BBI - M20-2.50x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549310This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $99.75
    $99.75
  • BBI - M20-2.50x120mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549309
    BBI - M20-2.50x120mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549309
    BBI - M20-2.50x120mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549309This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $90.38
    $90.38
  • BBI - M20-2.50x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549308
    BBI - M20-2.50x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549308
    BBI - M20-2.50x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549308This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $45.37
    $45.37
  • BBI - M20-2.50x90mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549306
    BBI - M20-2.50x90mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549306
    BBI - M20-2.50x90mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549306This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $40.72
    $40.72
  • BBI - M20-2.50x80mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549302
    BBI - M20-2.50x80mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549302
    BBI - M20-2.50x80mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549302This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $44.20
    $44.20
  • BBI - M20-2.50x70mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549298
    BBI - M20-2.50x70mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549298
    BBI - M20-2.50x70mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549298This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $24.43
    $24.43
  • BBI - M20-2.50x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549294
    BBI - M20-2.50x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549294
    BBI - M20-2.50x60mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549294This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $25.72
    $25.72
  • BBI - M20-2.50x55mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549292
    BBI - M20-2.50x55mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549292
    BBI - M20-2.50x55mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549292This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $25.31
    $25.31
  • BBI - M20-2.50x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549290
    BBI - M20-2.50x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549290
    BBI - M20-2.50x50mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549290This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $24.27
    $24.27
  • BBI - M20-2.50x45mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549288
    BBI - M20-2.50x45mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549288
    BBI - M20-2.50x45mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549288This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $24.07
    $24.07
  • BBI - M20-2.50x40mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549286
    BBI - M20-2.50x40mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549286
    BBI - M20-2.50x40mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549286This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $23.13
    $23.13
  • BBI - M20-2.50x35mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549284
    BBI - M20-2.50x35mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549284
    BBI - M20-2.50x35mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549284This BBI M20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M20 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $34.44
    $34.44
  • BBI - M16-2.00x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549277
    BBI - M16-2.00x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549277
    BBI - M16-2.00x150mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549277This BBI M16 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M16 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $55.00
    $55.00
  • BBI - M16-2.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549276
    BBI - M16-2.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549276
    BBI - M16-2.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549276This BBI M16 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M16 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $42.70
    $42.70
  • BBI - M16-2.00x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549275
    BBI - M16-2.00x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549275
    BBI - M16-2.00x130mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549275This BBI M16 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M16 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $42.26
    $42.26

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