► 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 - M2.5-0.45x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549527
    BBI - M2.5-0.45x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549527
    BBI - M2.5-0.45x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549527This BBI M2.5 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2.5 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $4.11
    $4.11
  • BBI - M2-0.40x25mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549526
    BBI - M2-0.40x25mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549526
    BBI - M2-0.40x25mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549526This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.78
    $0.78
  • BBI - M2-0.40x20mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549525
    BBI - M2-0.40x20mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549525
    BBI - M2-0.40x20mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549525This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $1.53
    $1.53
  • BBI - M2-0.40x16mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549524
    BBI - M2-0.40x16mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549524
    BBI - M2-0.40x16mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549524This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $1.00
    $1.00
  • BBI - M2-0.40x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549522
    BBI - M2-0.40x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549522
    BBI - M2-0.40x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549522This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.63
    $0.63
  • BBI - M2-0.40x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549520
    BBI - M2-0.40x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549520
    BBI - M2-0.40x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549520This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.71
    $0.71
  • BBI - M2-0.40x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549518
    BBI - M2-0.40x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549518
    BBI - M2-0.40x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549518This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.60
    $0.60
  • BBI - M2-0.40x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549516
    BBI - M2-0.40x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549516
    BBI - M2-0.40x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549516This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.38
    $0.38
  • BBI - M2-0.40x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549514
    BBI - M2-0.40x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549514
    BBI - M2-0.40x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549514This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.61
    $0.61
  • BBI - M2-0.40x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549512
    BBI - M2-0.40x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549512
    BBI - M2-0.40x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549512This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.33
    $0.33
  • BBI - M2-0.40x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549510
    BBI - M2-0.40x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549510
    BBI - M2-0.40x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549510This BBI M2 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M2 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $0.77
    $0.77
  • BBI - M1.6-0.35x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549509
    BBI - M1.6-0.35x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549509
    BBI - M1.6-0.35x12mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549509This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $3.69
    $3.69
  • BBI - M1.6-0.35x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549508
    BBI - M1.6-0.35x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549508
    BBI - M1.6-0.35x10mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549508This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $3.53
    $3.53
  • BBI - M1.6-0.35x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549507
    BBI - M1.6-0.35x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549507
    BBI - M1.6-0.35x8mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549507This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $2.58
    $2.58
  • BBI - M1.6-0.35x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549506
    BBI - M1.6-0.35x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549506
    BBI - M1.6-0.35x6mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549506This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $2.44
    $2.44
  • BBI - M1.6-0.35x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549504
    BBI - M1.6-0.35x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549504
    BBI - M1.6-0.35x5mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549504This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $2.23
    $2.23
  • BBI - M1.6-0.35x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549502
    BBI - M1.6-0.35x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549502
    BBI - M1.6-0.35x4mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549502This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $2.10
    $2.10
  • BBI - M1.6-0.35x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549501
    BBI - M1.6-0.35x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549501
    BBI - M1.6-0.35x3mm (Ft) - Metric Socket Head Cap Screw A4-70 (316) | 549501This BBI M1.6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M1.6 Grade: A4 for reliable strength Finish: 316 Stainless Steel...
    $1.99
    $1.99
  • BBI - M24-3.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549340
    BBI - M24-3.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549340
    BBI - M24-3.00x140mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549340This 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...
    $223.65
    $223.65
  • BBI - M24-3.00x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549336
    BBI - M24-3.00x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549336
    BBI - M24-3.00x100mm (Pt) - Metric Socket Head Cap Screw A4-70 (316) | 549336This 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...
    $117.62
    $117.62

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