► 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 - #3-48x1/4" - Imperial 304 Button Socket Screw UNC | 702040
    BBI - #3-48x1/4" - Imperial 304 Button Socket Screw UNC | 702040
    BBI - #3-48x1/4" - Imperial 304 Button Socket Screw UNC | 702040This BBI #3-48x1/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #3-48x1/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.62
    $0.62
  • BBI - #2-56x1" - Imperial 304 Button Socket Screw UNC | 702039
    BBI - #2-56x1" - Imperial 304 Button Socket Screw UNC | 702039
    BBI - #2-56x1" - Imperial 304 Button Socket Screw UNC | 702039This BBI #2-56x1" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x1" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $1.32
    $1.32
  • BBI - #3-48x3/16" - Imperial 304 Button Socket Screw UNC | 702035
    BBI - #3-48x3/16" - Imperial 304 Button Socket Screw UNC | 702035
    BBI - #3-48x3/16" - Imperial 304 Button Socket Screw UNC | 702035This BBI #3-48x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #3-48x3/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.57
    $0.57
  • BBI - #2-56x3/4" - Imperial 304 Button Socket Screw UNC | 702033
    BBI - #2-56x3/4" - Imperial 304 Button Socket Screw UNC | 702033
    BBI - #2-56x3/4" - Imperial 304 Button Socket Screw UNC | 702033This BBI #2-56x3/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x3/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $1.06
    $1.06
  • BBI - #2-56x5/8" - Imperial 304 Button Socket Screw UNC | 702030
    BBI - #2-56x5/8" - Imperial 304 Button Socket Screw UNC | 702030
    BBI - #2-56x5/8" - Imperial 304 Button Socket Screw UNC | 702030This BBI #2-56x5/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x5/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.71
    $0.71
  • BBI - #2-56x1/2" - Imperial 304 Button Socket Screw UNC | 702029
    BBI - #2-56x1/2" - Imperial 304 Button Socket Screw UNC | 702029
    BBI - #2-56x1/2" - Imperial 304 Button Socket Screw UNC | 702029This BBI #2-56x1/2" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x1/2" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #2-56x3/8" - Imperial 304 Button Socket Screw UNC | 702028
    BBI - #2-56x3/8" - Imperial 304 Button Socket Screw UNC | 702028
    BBI - #2-56x3/8" - Imperial 304 Button Socket Screw UNC | 702028This BBI #2-56x3/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x3/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.40
    $0.40
  • BBI - #2-56x5/16" - Imperial 304 Button Socket Screw UNC | 702027
    BBI - #2-56x5/16" - Imperial 304 Button Socket Screw UNC | 702027
    BBI - #2-56x5/16" - Imperial 304 Button Socket Screw UNC | 702027This BBI #2-56x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x5/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.39
    $0.39
  • BBI - #2-56x1/4" - Imperial 304 Button Socket Screw UNC | 702026
    BBI - #2-56x1/4" - Imperial 304 Button Socket Screw UNC | 702026
    BBI - #2-56x1/4" - Imperial 304 Button Socket Screw UNC | 702026This BBI #2-56x1/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x1/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.35
    $0.35
  • BBI - #2-56x3/16" - Imperial 304 Button Socket Screw UNC | 702025
    BBI - #2-56x3/16" - Imperial 304 Button Socket Screw UNC | 702025
    BBI - #2-56x3/16" - Imperial 304 Button Socket Screw UNC | 702025This BBI #2-56x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x3/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.65
    $0.65
  • BBI - #2-56x1/8" - Imperial 304 Button Socket Screw UNC | 702024
    BBI - #2-56x1/8" - Imperial 304 Button Socket Screw UNC | 702024
    BBI - #2-56x1/8" - Imperial 304 Button Socket Screw UNC | 702024This BBI #2-56x1/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #2-56x1/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $1.18
    $1.18
  • BBI - #1-72x1/2" - Imperial 304 Button Socket Screw UNF | 702017
    BBI - #1-72x1/2" - Imperial 304 Button Socket Screw UNF | 702017
    BBI - #1-72x1/2" - Imperial 304 Button Socket Screw UNF | 702017This BBI #1-72x1/2" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x1/2" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.94
    $0.94
  • BBI - #1-72x3/8" - Imperial 304 Button Socket Screw UNF | 702016
    BBI - #1-72x3/8" - Imperial 304 Button Socket Screw UNF | 702016
    BBI - #1-72x3/8" - Imperial 304 Button Socket Screw UNF | 702016This BBI #1-72x3/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x3/8" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.45
    $0.45
  • BBI - #1-72x1/4" - Imperial 304 Button Socket Screw UNF | 702015
    BBI - #1-72x1/4" - Imperial 304 Button Socket Screw UNF | 702015
    BBI - #1-72x1/4" - Imperial 304 Button Socket Screw UNF | 702015This BBI #1-72x1/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x1/4" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #1-72x3/16" - Imperial 304 Button Socket Screw UNF | 702014
    BBI - #1-72x3/16" - Imperial 304 Button Socket Screw UNF | 702014
    BBI - #1-72x3/16" - Imperial 304 Button Socket Screw UNF | 702014This BBI #1-72x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x3/16" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #1-72x1/8" - Imperial 304 Button Socket Screw UNF | 702013
    BBI - #1-72x1/8" - Imperial 304 Button Socket Screw UNF | 702013
    BBI - #1-72x1/8" - Imperial 304 Button Socket Screw UNF | 702013This BBI #1-72x1/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x1/8" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.43
    $0.43
  • BBI - #1-72x5/16" - Imperial 304 Button Socket Screw UNF | 702011
    BBI - #1-72x5/16" - Imperial 304 Button Socket Screw UNF | 702011
    BBI - #1-72x5/16" - Imperial 304 Button Socket Screw UNF | 702011This BBI #1-72x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #1-72x5/16" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #0-80x5/16" - Imperial 304 Button Socket Screw UNF | 702009
    BBI - #0-80x5/16" - Imperial 304 Button Socket Screw UNF | 702009
    BBI - #0-80x5/16" - Imperial 304 Button Socket Screw UNF | 702009This BBI #0-80x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x5/16" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.44
    $0.44
  • BBI - #0-80x1/2" - Imperial 304 Button Socket Screw UNF | 702006
    BBI - #0-80x1/2" - Imperial 304 Button Socket Screw UNF | 702006
    BBI - #0-80x1/2" - Imperial 304 Button Socket Screw UNF | 702006This BBI #0-80x1/2" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x1/2" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.96
    $0.96
  • BBI - #0-80x3/8" - Imperial 304 Button Socket Screw UNF | 702004
    BBI - #0-80x3/8" - Imperial 304 Button Socket Screw UNF | 702004
    BBI - #0-80x3/8" - Imperial 304 Button Socket Screw UNF | 702004This BBI #0-80x3/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #0-80x3/8" Thread: UNF Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.45
    $0.45

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