M12 Stainless Steel Bolts

Rust-free reliability. Built for the trade.

M12 stainless steel bolts, engineered for strength, precision, and long-lasting durability. Whether you need part thread hex bolts DIN 931 or fully threaded bolts DIN 933, you’ll find all your stainless M12 bolts right here.

Ideal for both structural and mechanical applications, our stainless steel M12 bolts are trusted across industries, from construction and steelwork to plant maintenance, and heavy timber builds. All bolts are supplied in A2 stainless steel, offering excellent corrosion resistance and reliable performance in all weather conditions.

Included in this range:

M12 Hex Bolts DIN 931 - Part-threaded for high shear strength and structural load-bearing

M12 Set Screws DIN 933 - Fully threaded for clamping, adjustability, or threaded holes

Filter Stainless M12 Bolts by Thread Type 

Easily filter our M12 stainless steel bolts by thread type to find exactly what you’re after without scrolling through the ones you don't need.

38 products


  • Material Composition: A2 (304). Great for outdoor and structural use
  • Available Sizes: Lengths from 30mm to 300mm, all with M12 (12mm) thread diameter
  • Thread Type: Metric coarse (standard M12 pitch)

Uses for Stainless Steel M12 Bolts

These stainless steel M12 bolts are the great for:

Timber-to-steel or steel-to-steel structural connections

Base plate fixings, mounting brackets, and heavy-duty joins

Industrial plant, agricultural machinery, and workshop builds

Outdoor joinery and large landscaping frameworks

Thanks to their stainless finish and strong metric thread, M12 bolts offer high grip strength while standing up to harsh weather and moisture.

Why Buy Your M12 Bolts from Fixabolt®?

✔ Wide range of lengths, ready to ship
✔ DIN 931 & DIN 933 stainless steel bolts, all M12 thread
✔ Filter by thread type for fast product selection
✔ A2 stainless steel for outdoor environments
✔ Bulk discounts available for trade orders
✔ Reliable tracked UK delivery to home, the office, or direct to site.
✔ Matching M12 nuts, washers, and fixings available

Whether you're fabricating steel frames, securing outdoor timber, or rebuilding industrial machinery, our M12 stainless steel bolts offer strength, longevity, and peace of mind.

Fixings that won’t let you down. Supplied by Fixabolt®.