M8-1.25 x 16mm DIN 7984 Hex Drive Class 8.8 Black Oxide Finish Alloy Steel Low Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 16.0 MILLIMETERS NOMINAL FASTENER LENGTH: 16.0 MILLIMETERS NOMINAL INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS WIDTH ACROSS FLATS: 5.0 MILLIMETERS NOMINAL THREAD PITCH IN MILLIMETERS: 1.25 PART NAME ASSIGNED BY CONTROLLING AGENCY: LOW HEAD SOCKET CAPSCREW COLOR: BLACK OVERALL MATERIAL: STEEL PROPERTY CLASS 8.8 OVERALL SURFACE TREATMENT: OXIDE OVERALL THREAD SERIES DESIGNATOR: M