M5 x 45mm 12.9 Alloy Steel Hex Socket Head Cap Screw Bolts 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: 154g; Main Color: Black; Thread Pitch: 0.8mm Total Length: (L2) 50mm/ 2"; Head Size: (AxB) 8.5 x 5mm/0.3" x 0.2"(D*H) Width Across Flat (W): 4mm/ 0.16"; L Length: 45mm/ 1.8"