Fastener specification:M3 ,M4 ,M5, M6, M8 ,M10 ,M12, inch: 1/2,3/8,1/4,5/32 3/16,5/16. material: steel, stainless steel... Fastenerwe use cold forged technique, not only save materials,good looking but also loading force, shearing force and torque force all reach international standard. Our products are widely used in furniture, car, ship, electron and other fittings of industrial products. types ...