Carriage Bolt Inch Neck Type Square Basic Material Steel Material Grade Grade 5 Fastener Finish Chrome Plated Dia/Thread Size 1/4 In.-20 Fastener Length 1 1/2 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) ASME B18.5 Drill Size 17/64 in Head Dia 0.563 in Head Height 9/64 in Head Type Round Square Height 0.125 in Square Width 0.245 in Tensile Strength 120 000 psi For Use With Grade 2 Nuts Package Quantity 5