Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade 5, Fastener Finish Zinc Plated, Dia./Thread Size 5/16 In.-18, Fastener Length 3 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B18.5, Drill Size 5/16 in, Head Dia. 0.688 in to 0.719 in, Head Height 11/64 in, Head Type Round, Square Height 0.156 in to 0.187 in, Square Width 0.307 in to 0.324 in, Tensile Strength 120,000 psi, Package Quantity 50
Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade A, Fastener Finish Plain, Dia./Thread Size 1/2 In.-13, Fastener Length 1 1/4 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B18.5, Drill Size 1/2 in, Head Dia. 1.032 in to 1.094 in, Head Height 17/64 in, Head Type Round, Square Height 0.250 in to 0.281 in, Square Width 0.492 in to 0.515 in, Tensile Strength 74,000 psi, For Use With Grade 2 Hex Nuts, Package Quantity 50