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M10 lag / coach screw size
17 mm wrench
wrench size for M10 coach screw
M10 coach screw — Heavy timber, structural wood, decking.
Full specification
| System | Metric coarse |
| Nominal diameter | 10 mm |
| Thread pitch | 1.5 mm |
| Wrench size | 17 mm |
| Pilot drill (wood) | 7.5 mm |
| Clearance hole | 11 mm |
| Common grade / class | 4.6 |
| Typical torque | 35 Nm (25.8 ft·lb) |
About M10 coach screws
Heavy timber, structural wood, decking.
Coach screws (also called lag screws) have a hexagonal head and wood screw thread. They are designed for heavy-duty applications in wood, including timber framing, decking, and structural wood connections.
Always drill a pilot hole to prevent splitting. The pilot hole should be slightly smaller than the core diameter of the screw.
Frequently asked questions
- What size wrench fits M10 coach screw?
- M10 coach screw uses a 17 mm wrench.
- What is the torque for M10 coach screw?
- Typical torque for M10 coach screw is about 35 Nm (25.8 ft·lb).
- What are coach screws used for?
- M10 coach screws are used in heavy timber, structural wood, decking.