Coach Bolt 12×150 sam
Often called carriage bolts or cup square hex bolts, coach bolts have a round head with a square underside.
Our zinc-plated coach bolts come complete with a matching hex nut (for stainless steel coach bolts please order the nuts separately).
Coach bolts are available in a range of sizes. All have metric coarse threads. They are most used in the construction and timber trades.
Coach bolts are often confused with coach screws, which are hexagon headed woodscrews. Coach Bolts are usually made from mild steel in strength grades 4.6 or 4.8 and our BZP stock is usually marked with the manufacturer’s I.D. and the strength grade on the head.