M8-1.25 x 40mm ISO 4762 Hex Drive Grade Class 12.9 Black Oxide Alloy Steel Socket Cap Screw - Full Thread / THREAD LENGTH: 1.25 MILLIMETERS NOMINAL FASTENER LENGTH: 40.0 MILLIMETERS NOMINAL HEAD STYLE: C1 HEXAGON END ITEM IDENTIFICATION: MRAP-BUFFALO A1 COLOR: BLACK FASTENER SURFACE TREATMENT: BLACK CHEMICAL FINISH FASTENER