M2-M12 Black Countersunk Screws High Tensile 12.9 Steel Allen Key Socket Bolts
Pitch: M2/0.4mm M2.5/0.45mm M3/0.5mm M4/0.7mm M5/0.8mm M6/1mm M8/1.25mm M10/1.5mm M12/1.75mm. Equipped with a mounting spanner. When tightening screw nut black, the spanner is not easy to slip out and the tightening effect is better.