uxcell M3x16mm 12.9 Alloy Steel Screw Cap Point Hex Socket Screws Bolts 50Pcs Drive Type: Hex Socket; Head Style: Hex Head; Material: 12.9 Alloy Steel Package Content: 50(+/-2%)Pcs x Hex Socket Cap Screws; Product Name: Hex Socket Cap Screw; Thread Size: 3x16mm/0.12"x0.6"(L*D) Weight: 55g; Main Color: Black Thread Pitch: 0.5mm; Total Length: 19mm/0.75" Head Diameter: 6mm/0.24"; Hex Hole Diameter: 3mm/0.12"