Our carriage bolts are of the highest quality available, and made of 655 Silicon Bronze alloy.
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.
High quality bronze. Quick turnaround.
Reliable. My first choice for specialized fasteners.
Excellent quality, fast service, reasonable prices. This was to rennovate the transom and keelson of a 1963 Thompson Seamate.