M12 Socket Head Cap Screws

M12 Socket Head Cap Screw Dimensions:

Our M12 socket head cap screws DIN 912 feature a thread diameter of 12mm and require a 10mm Allen key for easy and secure installation. 

M12 DIN 912

M12 socket head cap screws DIN 912 are a common choice for a diverse array of applications, from heavy-duty machinery and structural constructions to precision engineering and woodworking projects. 

Stainless Steel 12mm Socket Cap Head Screws DIN 912:

Shop our range of stainless steel M12 socket cap head screws, engineered for exceptional durability and resistance to corrosion. 

If you're looking for a smaller size than M12 DIN 912, find our M10 socket head cap screws here.

22 products


M12 Socket Head Cap Screws – Stainless Steel (DIN 912) | Fixabolt®

Big threads. Tight tolerances. Serious hold.

Fixabolt® M12 socket head cap screws are heavy-duty fasteners engineered for mechanical strength, precision alignment, and tight installations. Manufactured to DIN 912, these bolts feature a 12mm metric thread and a compact cylindrical head with a deep hex socket drive, giving you maximum torque in minimal space.

When strength, reliability, and corrosion resistance matter, these Allen bolts are the go-to solution for industrial machinery, structural steelwork, and high-load assemblies.

Technical Specifications

  • Size: M12 (12mm thread diameter)
  • Drive Type: Hex socket (Allen key compatible)
  • Standard: DIN 912 – fully threaded
  • A2 stainless steel (304) – resistant to rust, ideal for standard environments
  • Lengths Available: 30mm to 190mm

Partially threaded for solid engagement, clean tightening, and a strong mechanical grip.

M12 socket cap screws are a top choice for:

  • Assembling steel structures and brackets
  • Fixing base plates and mounting frames
  • Industrial plant and machinery repairs
  • Automotive and agricultural builds
  • Custom engineering and fabrication projects

Their compact head allows use in recessed holes or tight clearances, while the hex drive gives you reliable control when torquing to spec.

Why Choose Fixabolt® M12 Allen Bolts?

✔ Made to DIN 912 for precision and consistency

✔ Stainless steel in A2 grade

✔ Strong, sharp threading – easy to install and built to last

✔ Tracked UK delivery with live stock availability

✔ Bulk discounts and trade support available

✔ Matching nuts, washers, and components in stock

Whether you're replacing fixings on site or fabricating something from scratch, our stainless M12 socket screws won’t let you down.

Precision-engineered fixings. No compromise. Fix it with Fixabolt®.