Stainless Steel Coach Screws

Our A2 stainless steel coach screws are engineered to tackle the toughest construction projects and conform to DIN 571 standards. Whether you're building a deck, constructing a fence, or putting together wooden structures, our coach screws are designed to provide exceptional holding power and durability.

Stainless Steel Coach Screws

Stainless steel coach screws are great for projects that may be exposed to moisture due to their corrosion-resistant properties. 

Explore our range of coach screws below and find the perfect fit for your project needs, and if you need help with which size pilot hole to drill, check out our blog post.

Coach Screw Sizes

You can shop our stainless steel coach screws by thread diameter by using the filter on this page or through one of the links below.

M6 Coach Screws

M8 Coach Screws

M10 Coach Screws

M12 Coach Screws

40 products


Stainless Steel Coach Screws - Heavy Duty Wood Fixings from Fixabolt®

Tough fixings for serious jobs. Built to last.

Fixabolt® stainless steel coach screws are heavy-duty, self-tapping fasteners designed for timber and other solid materials. Also known as lag screws or lag bolts, these fixings feature a sharp point, coarse thread, and hex head for high-strength performance with minimal fuss.

Perfect for outdoor joinery, landscaping, fencing, timber frames, and decking - these screws bite in hard and hold fast. Simply pre-drill a pilot hole, then drive in with a socket or spanner for a solid, reliable fixing every time.

Why Choose Fixabolt® Coach Screws?

  • DIN 571 standard: consistent quality for structural use
  • Hex head: fast and easy to drive with a spanner or impact driver
  • Self-tapping threads: strong grip into wood, plugs, or anchors
  • Corrosion-resistant stainless steel: suitable for all-weather use

Whether you’re a carpenter building roof trusses or a landscaper fixing sleepers, our coach screws are made to get the job done right, first time.

Sizes and Materials

Our stainless steel coach screws are available in a wide range of sizes to suit your job:

  • Thread diameters:** 6mm to 16mm
  • Lengths: 50mm to 300mm
  • Materials: A2 Stainless Steel (304) which is great for general outdoor and indoor use.

Trade Benefits

✔ Bulk quantity discounts  

✔ Fast, tracked UK shipping  

✔ Trusted by builders, joiners, landscapers, and more  

✔ Real stock. Real service. No time-wasting.  

Coach Screws FAQs

How do you install coach screws?

Drill a pilot hole slightly smaller than the screw diameter, then drive in using a spanner or socket. Easy and effective.

Can coach screws be used in concrete?

Yes, with the right wall plug or anchor. For direct-to-concrete fixings, check out our masonry through bolts.

Do coach screws need rawl plugs?

In masonry or concrete, sometimes, but not always. It really depends on how solid the concrete is and how loose the pre-drilled hole is. In timber, no plug needed - just drill and drive.

What are coach screws used for?

They’re commonly used to fix timber to timber, or to secure metal brackets to wood in structural and outdoor builds.

Can coach screws be used outdoors?

Definitely. Our stainless steel coach screws are designed to withstand the elements and won’t rust.

Fixings you can trust. Fixings made for the trade. That’s Fixabolt®.