M12 Coach Screws

M12 coach screws have a thread diameter of 12mm and are commonly used for fastening metal to wood or two or more pieces of timber. They are also known as M12 lag screws or M12 lag bolts.

M12 Coach Screw Dimensions

  • Thread Diameter: 12mm
  • Socket Size: 19mm
  • Head Height: 8mm
  • Head Type: Hexagon
  • Specification: DIN 571

M12 stainless steel coach screws are tightened with a 19mm socket, making them easy to grip and remove. The threads on M12 coach screws are coarser than those on M10 coach screws, making them less likely to strip. 

M12 Stainless Steel Coach Screws 12mm DIN 571

M12 coach screws in stainless steel are sometimes called M12 lag bolts or lag screws because they were commonly used to attach lag brackets to wood. They are also used to fasten metal to wood, in applications where a high level of torque is required, such as attaching deck boards to a joist, and sometimes in masonry projects. It is recommended to drill a pilot hole before use for maximum stability.

Browse our full range of stainless steel coach screws.

Not what you were looking for? Find M12 coach bolts DIN 603 here. 

13 products