uxcell M5 x 12mm 12.9 Alloy Steel Hex Socket Head Cap Screws Bolt Black 50pcs Drive Type: Hex Socket; Head Style: Hex Head; Material: 12.9 Alloy Steel Package Content: 50(+/-2%) x Socket Head Cap Screw; Product Name: Socket Head Cap Screw; Thread Size: M5 x 12mm/ 0.2" x 0.47"(D*L) Weight: 154g; Main Color: Black Thread Pitch: 0.8mm; Total Length: 17mm/ 0.67" Head Size: 8 x 5mm/0.3" x 0.2"(D*H); Width Across Flat (s): 4mm/0.16"