Inch, Plow Bolt, #3 Dome Head Type, Alloy Steel, Material Grade Grade 8, Plain Fastener Finish, Dia./Thread Size 5/8 In.11, Fastener Length 2 1/2 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Industry Standards SAE J429, Head Style Countersunk, Head Dia. 1.044 in, Head Height 33/64 in, Head Angle (Deg.) 80, Package Quantity 10 Plow Bolts with #3 domeheads are designed to install plow blades for construction and snow removal. Each features a countersunk square neck with 80 Degrees head angle that locks into position as the nut is tightened, providing added strength and durability. Grade 8 bolts provide high tensile strength and high torque capabilities.