[2]: SPECIFICATION - Thread Size: 5/16"(Dia) x 2-3/4"(L); Hex Head Size: 12mm(W)x5mm(T)/0.47"x0.2" It has coarse threads and is able to grip the inside of wooden workpieces. [4]: ADVANTAGE - Made of carbon steel with black oxide surface treatment, the hex lag screw has higher hardness, corrosion resistance, and rust resistance, and provides a firm fixing. [5]: QUANTITY INCLUDED - 10Pcs x Hex Lag Screws
Material: Carbon Steel Head Style: Hex, Socket Exterior Finish: Black Oxide Thread Size: 5/16" Metal Type: Carbon Steel