Our carriage bolts, often also referred to as coach bolts, are of the highest quality available, and made of a solid 655 Silicon Bronze alloy.
Our carriage bolts are partially threaded, with a fully bodied shank and beautifully cut threads, unlike the "carriage bolts" that our competitors carry. The full bodied shank will mean a stronger bolt, and one that will seal nicely in it's clearance hole. As with all of our bronze fasteners, we've carefully chosen our supplier here so that we are only selling the highest quality bronze carriage bolts available.
Round head, square neck.
Meets ANSI/ASME B18.5 Standard Specifications:
The formula for determining thread length is: Bolts 6 in. and shorter, 2 diameters plus 1/4 in. Bolts over 6 in. 2 diameters plus 1/2 in. If bolts are too short to apply the formula, the thread will be extended as close to head as possible.