M8-1.25 x 50mm ISO 4762 Hex Drive Class 12.9 Black Oxide Finish Alloy Steel Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.25 INCHES NOMINAL FASTENER LENGTH: 50.0 MILLIMETERS NOMINAL HEAD STYLE: C5 HEXAGON COUNTERSUNK INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS PART NAME ASSIGNED BY CONTROLLING AGENCY: SOCKET CAP SCREW SPECIAL FEATURES: DRIVE SIZE-6MM, WEIGHT- 0.0549, THREAD- COARSE, GRADE- CLASS 12.9 COLOR: BLACK OVERALL MATERIAL: STEEL PROPERTY CLASS 12.9 OVERALL SURFACE TREATMENT: BLACK CHEMICAL FINISH OVERALL THREAD SERIES DESIGNATOR: ISO M