Carriage Bolt Inch Neck Type Square Basic Material Steel Material Grade Grade A Fastener Finish Plain Dia/Thread Size 7/16 In.-14 Fastener Length 2 1/2 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) ASME B18.5 Drill Size 7/16 in Head Dia 0.907 in to 0.969 in Head Height 15/64 in Head Type Round Square Height 0.219 in to 0.250 in Square Width 0.431 in to 0.452 in Tensile Strength 74 000 psi For Use With Grade 2 Hex Nuts Package Quantity 25