4mmx16mm Male Thread Carbon Steel Hex Head Self Tapping Screws 100 Pcs Head Style: Hex Head; Material: Carbon Steel; Package Content: 100(+/-2%) x Self Tapping Screws Product Name: Self Tapping Screw; Thread Size: 4mm x 16mm/0.16" x 0.63"(D*L); Weight: 168g Drive Type: Hex Socket; Main Color: Black; Overall Size: 20mm/0.8"(length) Pitch: 1.5mm; Head Diameter: 6mm/0.24" Head Height: 4mm/0.16"; Hex Width: 3mm/0.12"