M10 Coach Screws

M10 coach screws have a 10mm thread diameter and are manufactured to DIN 571. The “M10” refers to the thread diameter, not the head size. M10 coach screws are driven using a 17mm spanner or socket.

M10 Coach Screw Dimensions

  • Thread Diameter: 10mm
  • Socket Size: 17mm
  • Head Height: 7mm
  • Head Type: Hexagon
  • Specification: DIN 571

10mm Coach Screws DIN 571

M10 coach screws are widely used for timber fixing where a strong, secure hold is needed without stepping up to larger diameters. Common applications include fixing brackets, joist supports, and general structural timber connections.

The coarse thread is designed to bite firmly into timber, providing excellent grip and resistance to pull-out. The hexagon head allows for controlled tightening with a spanner or socket, making them suitable for higher torque applications.

For best results, a pilot hole should be drilled before installation, particularly in hardwoods, to reduce the risk of splitting and to ensure accurate placement.

Stainless Steel M10 Coach Screws

At Fixabolt, we supply stainless steel M10 coach screws at great prices for trades and DIYers. If you're looking for a coarser thread with a wider diameter, try M12 coach screws. For the size down, M8 coach screws could be a better fit. 

Alternatively, you can shop our full range stainless steel coach screws here. 

Not what you were looking for? Find M10 DIN 603 coach bolts here.  

M10 Coach Screws – Stainless Steel (DIN 571 Hex Head) | Fixabolt®

For serious timber fixings. Strong bite. Rust-free finish.

Fixabolt® stainless steel M10 coach screws are the go-to choice for heavy-duty timber fixings where holding power and durability are critical. Manufactured to DIN 571, these 10mm hex head screws feature a sharp point and deep, self-tapping thread and are perfect for structural joinery, outdoor builds, and fixing into plugs or rawl anchors in masonry.

Drive them in with a spanner or impact wrench, and they’ll lock into timber with minimal fuss and maximum strength.

10mm Coach Screw Specifications

  • Thread Size: M10 (10mm diameter)
  • Standard: DIN 571 - coarse thread with hex head
  • Drive Type: Hex head - compatible with sockets, spanners, or impact tools
  • Lengths Available: From 50mm to 200mm

Material Options:

A2 (304) stainless steel – general-purpose corrosion-resistant fixings

These coach screws feature a partially threaded shank for extra grip and a secure pull between joined materials.

Common Applications of M10 Coach Screws

Trusted across building, landscaping, and structural timber work, M10 coach screws are ideal for:

  • Securing wall plates and structural posts
  • Timber-to-wall and timber-to-steel applications (with plugs or brackets)
  • Decking subframes, pergolas, and garden structures
  • Large timber sleepers, cladding, and fencing supports
  • Industrial and outdoor heavy-duty fixings

A pilot hole is recommended with 10mm coach screws for cleaner driving and maximum hold, especially in hardwood or when fixing into plugs.

Why Choose Fixabolt® M10 Coach Screws?

✔ A2 stainless steel - no rust, even in tough conditions

✔ DIN 571 compliant for strength and consistency

✔ Ideal for timber and masonry fixings

✔ Tracked, fast UK shipping from a trusted trade supplier

✔ Bulk discounts for larger orders

Need matching M10 stainless steel washers? Add them easily from our stainless steel flat washers page.

Fix it right. Fix it once. Fix it with Fixabolt®.