Uxcell a15073000ux1103 M8x20mm Full Thread Nylon Hex Hexagon Head Cap Screw Bolt Head style: hex head; material: nylon Package Content: 100(+/-2%)pcs x hex head bolt; product Name: hex head bolt Thread size: m8x20mm/0.3"X0.8"(D*l); weight: 141G Main Color: black; thread Pitch: 1.25mm Total length: 26mm/1"; head size: 13x6mm/0.51"X0.24"(S*k)