uxcell M8x50mm Hex Bolt Socket Head Cap Machine Screws Black 50Pcs Drive Type: Hex Socket; Head Style: Socket Cap Head; Material: 12.9 Alloy Steel Package Content: 50(+/-2%)pcs x Socket Head Cap Screws; Product Name: Socket Head Cap Screws; Thread Size: 8x50mm/0.3"x2"(D*L) Weight:1153g; Fastener Type: Socket Screw; Main Color: Black Thread Pitch: 1.25mm; Total Length: 58mm; Head Diameter: 13mm/0.5" Head Height: 8mm/0.3"; Hex Key Size: 7mm/0.28"