► 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 - #6-32x1 1/4" - Imperial 304 Button Socket Screw UNC | 702096
    BBI - #6-32x1 1/4" - Imperial 304 Button Socket Screw UNC | 702096
    BBI - #6-32x1 1/4" - Imperial 304 Button Socket Screw UNC | 702096This BBI #6-32x1 is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #6-32x1 Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for...
    $1.60
    $1.60
  • BBI - #6-32x1" - Imperial 304 Button Socket Screw UNC | 702093
    BBI - #6-32x1" - Imperial 304 Button Socket Screw UNC | 702093
    BBI - #6-32x1" - Imperial 304 Button Socket Screw UNC | 702093This BBI #6-32x1" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #6-32x1" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $1.43
    $1.43
  • BBI - #6-32x5/16" - Imperial 304 Button Socket Screw UNC | 702087
    BBI - #6-32x5/16" - Imperial 304 Button Socket Screw UNC | 702087
    BBI - #6-32x5/16" - Imperial 304 Button Socket Screw UNC | 702087This BBI #6-32x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #6-32x5/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.66
    $0.66
  • BBI - #6-32x3/16" - Imperial 304 Button Socket Screw UNC | 702084
    BBI - #6-32x3/16" - Imperial 304 Button Socket Screw UNC | 702084
    BBI - #6-32x3/16" - Imperial 304 Button Socket Screw UNC | 702084This BBI #6-32x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #6-32x3/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.55
    $0.55
  • BBI - #5-40x1" - Imperial 304 Button Socket Screw UNC | 702081
    BBI - #5-40x1" - Imperial 304 Button Socket Screw UNC | 702081
    BBI - #5-40x1" - Imperial 304 Button Socket Screw UNC | 702081This BBI #5-40x1" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x1" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.79
    $0.79
  • BBI - #5-40x3/4" - Imperial 304 Button Socket Screw UNC | 702078
    BBI - #5-40x3/4" - Imperial 304 Button Socket Screw UNC | 702078
    BBI - #5-40x3/4" - Imperial 304 Button Socket Screw UNC | 702078This BBI #5-40x3/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x3/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.75
    $0.75
  • BBI - #5-40x5/8" - Imperial 304 Button Socket Screw UNC | 702075
    BBI - #5-40x5/8" - Imperial 304 Button Socket Screw UNC | 702075
    BBI - #5-40x5/8" - Imperial 304 Button Socket Screw UNC | 702075This BBI #5-40x5/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x5/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.70
    $0.70
  • BBI - #5-40x1/2" - Imperial 304 Button Socket Screw UNC | 702072
    BBI - #5-40x1/2" - Imperial 304 Button Socket Screw UNC | 702072
    BBI - #5-40x1/2" - Imperial 304 Button Socket Screw UNC | 702072This BBI #5-40x1/2" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x1/2" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.69
    $0.69
  • BBI - 3/8"-16x3" - Imperial 304 Button Socket Screw UNC | 702071
    BBI - 3/8"-16x3" - Imperial 304 Button Socket Screw UNC | 702071
    BBI - 3/8"-16x3" - Imperial 304 Button Socket Screw UNC | 702071This BBI 3/8"-16x3" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: 3/8"-16x3" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $9.96
    $9.96
  • BBI - #5-40x3/8" - Imperial 304 Button Socket Screw UNC | 702069
    BBI - #5-40x3/8" - Imperial 304 Button Socket Screw UNC | 702069
    BBI - #5-40x3/8" - Imperial 304 Button Socket Screw UNC | 702069This BBI #5-40x3/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x3/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.67
    $0.67
  • BBI - #5-40x5/16" - Imperial 304 Button Socket Screw UNC | 702068
    BBI - #5-40x5/16" - Imperial 304 Button Socket Screw UNC | 702068
    BBI - #5-40x5/16" - Imperial 304 Button Socket Screw UNC | 702068This BBI #5-40x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x5/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.64
    $0.64
  • BBI - #5-40x1/4" - Imperial 304 Button Socket Screw UNC | 702066
    BBI - #5-40x1/4" - Imperial 304 Button Socket Screw UNC | 702066
    BBI - #5-40x1/4" - Imperial 304 Button Socket Screw UNC | 702066This BBI #5-40x1/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #5-40x1/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.62
    $0.62
  • BBI - #4-40x1" - Imperial 304 Button Socket Screw UNC | 702063
    BBI - #4-40x1" - Imperial 304 Button Socket Screw UNC | 702063
    BBI - #4-40x1" - Imperial 304 Button Socket Screw UNC | 702063This BBI #4-40x1" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #4-40x1" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.80
    $0.80
  • BBI - #4-40x3/4" - Imperial 304 Button Socket Screw UNC | 702059
    BBI - #4-40x3/4" - Imperial 304 Button Socket Screw UNC | 702059
    BBI - #4-40x3/4" - Imperial 304 Button Socket Screw UNC | 702059This BBI #4-40x3/4" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #4-40x3/4" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.67
    $0.67
  • BBI - #4-40x5/8" - Imperial 304 Button Socket Screw UNC | 702058
    BBI - #4-40x5/8" - Imperial 304 Button Socket Screw UNC | 702058
    BBI - #4-40x5/8" - Imperial 304 Button Socket Screw UNC | 702058This BBI #4-40x5/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #4-40x5/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.62
    $0.62
  • BBI - #4-40x5/16" - Imperial 304 Button Socket Screw UNC | 702057
    BBI - #4-40x5/16" - Imperial 304 Button Socket Screw UNC | 702057
    BBI - #4-40x5/16" - Imperial 304 Button Socket Screw UNC | 702057This BBI #4-40x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #4-40x5/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.41
    $0.41
  • BBI - #4-40x3/16" - Imperial 304 Button Socket Screw UNC | 702054
    BBI - #4-40x3/16" - Imperial 304 Button Socket Screw UNC | 702054
    BBI - #4-40x3/16" - Imperial 304 Button Socket Screw UNC | 702054This BBI #4-40x3/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #4-40x3/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.74
    $0.74
  • BBI - #3-48x5/16" - Imperial 304 Button Socket Screw UNC | 702044
    BBI - #3-48x5/16" - Imperial 304 Button Socket Screw UNC | 702044
    BBI - #3-48x5/16" - Imperial 304 Button Socket Screw UNC | 702044This BBI #3-48x5/16" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #3-48x5/16" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.64
    $0.64
  • BBI - #3-48x1/2" - Imperial 304 Button Socket Screw UNC | 702042
    BBI - #3-48x1/2" - Imperial 304 Button Socket Screw UNC | 702042
    BBI - #3-48x1/2" - Imperial 304 Button Socket Screw UNC | 702042This BBI #3-48x1/2" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #3-48x1/2" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.74
    $0.74
  • BBI - #3-48x3/8" - Imperial 304 Button Socket Screw UNC | 702041
    BBI - #3-48x3/8" - Imperial 304 Button Socket Screw UNC | 702041
    BBI - #3-48x3/8" - Imperial 304 Button Socket Screw UNC | 702041This BBI #3-48x3/8" is a low-profile button head socket screw driven with an Allen key.► Key Features Size: #3-48x3/8" Thread: UNC Grade: Grade 304 for reliable strength Finish: 304 Stainless Steel for corrosion...
    $0.70
    $0.70

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