1/4-20 x 2" Long Carriage Bolts Set w/ Nuts & Washers, 100 Qty (BCP284)

Round domed head with square neck Package includes 100 each of bolts, hex nuts & washers Zinc plated for corrosion resistance Suitable for indoor or outdoor use BCP Fasteners are always backed by a 100% satisfaction guarantee A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood or wood to wood.Carriage bolts are distinguished from other bolts by its shallow mushroom head and the portion immediately beneath the head is formed into a square section.  This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam