Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade A, Fastener Finish Plain, Dia./Thread Size 3/4 In.-10, Fastener Length 6 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B18.5, Drill Size 3/4 in, Head Dia. 1.469 in to 1.594 in, Head Height 25/64 in, Head Type Round, Square Height 0.375 in to 0.406 in, Square Width 0.741 in to 0.768 in, Tensile Strength 74,000 psi, For Use With Grade 2 Hex Nuts, Package Quantity 10