uxcell M8 x 45mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 10 Pcs Drive Type: Hex Socket; Head Style: Button Head; Material: Alloy Steel Package Content: 10 x Socket Button Head Screws; Product Name: Socket Button Head Screws; Thread Size: 8(M8) x 45mm/ 0.31" x 1.8"(D*L) Weight: 169g; Main Color: Black; Thread Pitch: 1.0mm Total Length: 49mm/ 1.9"; Tensile Strength: 10.9 Head Diameter: 14mm/ 0.55"; Hex Key Size: 5mm/ 0.2"