Inch Plow Bolt #3 Flat Head Type Carbon Steel Material Grade Grade 5 Zinc Plated Fastener Finish Dia/Thread Size 1/2 In.-13 Fastener Length 4 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Fastener Industry Standards SAE J-429 Head Style Countersunk Head Dia 0.945 in Head Height 27/64 in Head Angle (Deg.) 80 Includes - Package Quantity 220