Stove Bolt Head Type Flat Material Steel Finish Zinc Plated Drive Slotted Thread Size 5/16 In.-18 Fastener Length 1 1/2 in Head Width 0.597 in Head Height 0.191 in Tensile Strength 60 000 psi Dimensional Standards ASME B18.6.3 Pack Size Small Minimum Thread Length 1 in Type Stove Bolt System of Measurement Inch Thread Type Coarse Package Quantity 100