Material: high strength alloy steel; Model: 12.9 G SCM435 DIN912; Specification: M8 * 100; Commodity use: tighten role for mechanical equipment; The gross weight (including packaging) : 50.6; The outer packing size (cm) : 10 * 2 * 2; DIN912 12.9 G SCM435 dacro long meetall, teflon high strength alloy steel bolt, high strength bolt; Products are mainly used in coal mine equipment, high-speed rail, bullet trains, urban rail transit, shipping, offshore crane, lifting capacity, high pressure pumps, vacuum pumps, mining machinery, amusement equipment, wind power industry, etc;