M8-1.25 x 30mm DIN 7991 Hex Drive Class 10.9 Black Oxide Finish Alloy Steel Flat Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 22.0 MILLIMETERS NOMINAL FASTENER LENGTH: 29.6 MILLIMETERS MINIMUM AND 30.4 MILLIMETERS MAXIMUM HEAD STYLE: C50 FLAT COUNTERSUNK HEAD DIAMETER: 15.6 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 2355-01-567-4930 TRUCK, BOMB SERVICE NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS WIDTH ACROSS FLATS: 5.0 MILLIMETERS MINIMUM AND 5.1 MILLIMETERS MAXIMUM THREAD PITCH IN MILLIMETERS: 1.3 EXTERNAL THREAD TOLERANCE CLASS: 6G PART NAME ASSIGNED BY CONTROLLING AGENCY: BLACK OXIDE FLAT HEAD SOCKET CAP SCREW COLOR: BLACK OVERALL MATERIAL: STEEL PROPERTY CLASS 10.9 OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: ISO 898, CLASS 10.9 ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: BLACK CHEMICAL FINISH OVERALL THREAD SERIES DESIGNATOR: M