Hex Head Lag Screw, Material Steel, Finish Zinc Plated, Screw Size 3/4 In., Fastener Length 3 in, Threads per Inch Not Applicable, Thread Style Not Applicable, Minimum Thread Length Not Applicable, Dimensional Standards ASME B18.2.1, Pack Size Small, System of Measurement Inch, Drive External Hex, Drive Size 1 1/8 in, Head Height 0.5 in, Head Style Hex, Head Width 0.768 in, Package Quantity 20