hex forged bolt and nut
MOQ:50PCS
grade:3.6 ,4.6 ,4.8 ,5.6 ,6.8 ,8.8 ,9.8 ,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...