uxcell M5x16mm 10.9 Alloy Steel Button Head Hex Socket Cap Screw Bolt 100pcs Drive Type: Hex Socket; Head Style: Button Head; Material: 10.9 Alloy Steel Package Content: 100(+/-2%)pcs x Socket Button Head Screws; Product Name: Socket Button Head Screws; Thread Size: M5x16mm/0.2"x0.63"(D*L) Weight: 287g; Fastener Type: Socket Screw; Main Color: Black Thread Pitch: 0.8mm; Total Length: 19mm/0.75"; Head Size: (Approx)9x3mm/0.35"x0.12"(D*T) Hex Socket Width: (Approx)3mm/0.12"; Hex Socket Depth: (Approx)2mm/0.08"