► 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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  • Hobsons - M4 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040020
    Hobsons - M4 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040020
    Hobsons - M4 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040020This Hobson M4 x 20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 20 Genuine Hobson —...
    $12.60
    $12.60
  • Hobsons - M4 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040016
    Hobsons - M4 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040016
    Hobsons - M4 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040016This Hobson M4 x 16 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 16 Genuine Hobson —...
    $12.30
    $12.30
  • Hobsons - M4 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040012
    Hobsons - M4 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040012
    Hobsons - M4 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040012This Hobson M4 x 12 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 12 Genuine Hobson —...
    $11.65
    $11.65
  • Hobsons - M4 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040010
    Hobsons - M4 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040010
    Hobsons - M4 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040010This Hobson M4 x 10 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 10 Genuine Hobson —...
    $11.35
    $11.35
  • Hobsons - M4 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040008
    Hobsons - M4 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040008
    Hobsons - M4 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040008This Hobson M4 x 8 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 8 Genuine Hobson —...
    $11.02
    $11.02
  • Hobsons - M4 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040006
    Hobsons - M4 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040006
    Hobsons - M4 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM040006This Hobson M4 x 6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M4 x 6 Genuine Hobson —...
    $10.72
    $10.72
  • Hobsons - M3 x 30 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030030
    Hobsons - M3 x 30 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030030
    Hobsons - M3 x 30 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030030This Hobson M3 x 30 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 30 Genuine Hobson —...
    $20.50
    $20.50
  • Hobsons - M3 x 25 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030025
    Hobsons - M3 x 25 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030025
    Hobsons - M3 x 25 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030025This Hobson M3 x 25 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 25 Genuine Hobson —...
    $12.60
    $12.60
  • Hobsons - M3 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030020
    Hobsons - M3 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030020
    Hobsons - M3 x 20 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030020This Hobson M3 x 20 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 20 Genuine Hobson —...
    $11.98
    $11.98
  • Hobsons - M3 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030016
    Hobsons - M3 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030016
    Hobsons - M3 x 16 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030016This Hobson M3 x 16 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 16 Genuine Hobson —...
    $11.81
    $11.81
  • Hobsons - M3 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030012
    Hobsons - M3 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030012
    Hobsons - M3 x 12 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030012This Hobson M3 x 12 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 12 Genuine Hobson —...
    $11.51
    $11.51
  • Hobsons - M3 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030010
    Hobsons - M3 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030010
    Hobsons - M3 x 10 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030010This Hobson M3 x 10 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 10 Genuine Hobson —...
    $11.35
    $11.35
  • Hobsons - M3 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030008
    Hobsons - M3 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030008
    Hobsons - M3 x 8 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030008This Hobson M3 x 8 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 8 Genuine Hobson —...
    $11.02
    $11.02
  • Hobsons - M3 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030006
    Hobsons - M3 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030006
    Hobsons - M3 x 6 - Bumax 88 Bumax 88 Socket Head Cap Screw | SHB8PCM030006This Hobson M3 x 6 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M3 x 6 Genuine Hobson —...
    $10.88
    $10.88
  • Hobsons - 1/2" x 2" - Bumax 88 ANSI B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500200
    Hobsons - 1/2" x 2" - Bumax 88 ANSI B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500200
    Hobsons - 1/2" x 2" - Bumax 88 Ansi B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500200This Hobson is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Genuine Hobson — trusted Australian fastener...
    $115.49
    $115.49
  • Hobsons - 1/2" x 1-1/4" - Bumax 88 ANSI B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500125
    Hobsons - 1/2" x 1-1/4" - Bumax 88 ANSI B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500125
    Hobsons - 1/2" x 1-1/4" - Bumax 88 Ansi B18.3 Bumax 88 Socket Head Cap Screw - UNC | SHB8PC0500125This Hobson is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Genuine Hobson — trusted Australian fastener...
    $105.45
    $105.45
  • Hobsons - M12 x 50 - Nylon Natural Nylon Socket Head Cap Screw | SH66PCM120050
    Hobsons - M12 x 50 - Nylon Natural Nylon Socket Head Cap Screw | SH66PCM120050
    Hobsons - M12 x 50 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120050This Hobson M12 x 50 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M12 x 50 Finish:...
    $28.14
    $28.14
  • Hobsons - M12 x 45 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120045
    Hobsons - M12 x 45 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120045
    Hobsons - M12 x 45 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120045This Hobson M12 x 45 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M12 x 45 Finish:...
    $5,025.05
    $5,025.05
  • Hobsons - M12 x 40 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120040
    Hobsons - M12 x 40 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120040
    Hobsons - M12 x 40 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120040This Hobson M12 x 40 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M12 x 40 Finish:...
    $5,025.05
    $5,025.05
  • Hobsons - M12 x 35 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120035
    Hobsons - M12 x 35 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120035
    Hobsons - M12 x 35 - Nylon Natural Nylon Socket Head Cap Screw - Qty 25 | SH66PCM120035This Hobson M12 x 35 is a cylindrical socket head cap screw driven with an Allen key for high-torque clamping.► Key Features Size: M12 x 35 Finish:...
    $5,025.05
    $5,025.05

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