... , stainless steel, bradd, aluminumSize: M3-M12, 5/32"-3/8"Type: flat head, countersunk head, round body, hex body, open end ... , body with ribben, body with groove and so on. We use cold forged technique,not only save materials,good looking but ... and torque force all reach international standard.Our products widely use in furniture, car, ship,electron and other fittings of industrial products ...