uxcell M5 x 40mm 12.9 Alloy Steel Hex Socket Head Cap Screws Bolt Black 20pcs Drive Type: Hex Socket; Head Style: Hex Head; Material: 12.9 Alloy Steel Package Content: 20 x Socket Head Cap Screw; Product Name: Socket Head Cap Screw; Thread Size: (DxL1)M5 x 22mm / 0.2" x 0.87"(D*L) Weight: 140g; Main Color: Black; Thread Pitch: 0.8mm Total Length: (L2) 45mm/ 1.8"; Head Size: (AxB) 8.5 x 5mm/0.3" x 0.2"(D*H) Width Across Flat (W): 4mm/ 0.16"; L Length: 40mm/ 1.6"