hex forged bolt and nut MOQ:50PCS grade:3.6 ,4.6 , ... ,10.9 ,12.9 hex forged bolt and nutThe screw head and ( with the outer screw thread cylinder ) is ... composed of two parts of a class of fasteners, and nut used for fastening, connecting the two with a through ... form called bolt connection. As the nut from the bolt rotation, and can make the two parts separately, so ... ,10.9 ,12.9 hex forged bolt and nut