Hex Head Lag Screw Material Steel Finish Hot Dipped Galvanized Screw Size 3/4 in Fastener Length 6 in Threads per Inch 4.5 Thread Style Partially Threaded Minimum Thread Length 3 19/32 in 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