hex forged bolt and nut MOQ:50PCS grade:3.6 ,4. ... 8 ,9.8 ,10.9 ,12.9 hex forged bolt and nutThe screw head and ( with the outer screw thread ... hole components. The connection form called bolt connection. As the nut from the bolt rotation, and can make the two ... parts separately, so the bolt connection is detachable connection.grade:3.6 ,4.6 ... ,9.8 ,10.9 ,12.9 hex forged bolt and nut