What is a Coach Screw?
A coach screw is a strong, heavy-duty wood screw with a hexagon head, perfect for heavy timber projects. They differ from standard multi-purpose wood screws, which are smaller and suited for lighter wood applications.
Also known as
Lag screws.
Why use Coach Screws?
When you’re working with heavy timber, particularly in landscaping, engineering or construction, coach screws are essential. You can use them to:
- Join two pieces of heavy wood.
- Secure metal to wood.
- Fix timber to masonry, like concrete and brick.
- Build outdoor furniture and structures, such as benches, tables, swings, decking, playground equipment, timber frames and animal shelters.
When working with woods like oak or cedar that contain high sap levels, stainless steel screws are the best option. Zinc-plated screws, although widely used, may corrode in sap-rich woods.
Coach Screws: How they work
Choose the correct screw length for your project, drill a pilot hole, place a washer (a penny washer works
