Screw Head : Button ; Screw Drive : Hex Socket, Hex Size 4 mm
Head Diameter: 10.31mm, Head Height: 3.32 mm,Thread Size(Dia.): 6mm; Thread Pitch :1.0 mm
Thread Length: 8mm /0.31", 10mm/0.39", 12mm/0.47", 16mm/0.63", 20mm/0.79"
10.9 Grade Alloy Steel, Hardness HRC 32-39; Black Oxide Finish to Anti-rust
Package: 50 Pcs Hex Socket Button Head Cap Screws, Come in an Easy-use Storage Box