0.688 in, Head Height 11/64 in, Head Type Round, Square Height 0.156 in, Square Width 0.307 in, Tensile Strength 74,000 psi, For Use With Grade 2 Zinc Nuts, Package Quantity 100
Carriage Bolt,5/16-18x1 3/4L,Pk100 Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade A, Fastener Finish Zinc Plated, Dia..-18, Fastener Length 1 3/4 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B18.