M6-1.0 x 20mm ISO 7380 Hex Drive Class 10.9 Black Oxide or Plain Finish Alloy Steel Button Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 18.4 MILLIMETERS MINIMUM AND 18.6 MILLIMETERS MAXIMUM FASTENER LENGTH: 19.6 MILLIMETERS MINIMUM AND 20.4 MILLIMETERS MAXIMUM HEAD STYLE: C30 BUTTON HEAD DIAMETER: 10.1 MILLIMETERS MINIMUM AND 10.5 MILLIMETERS MAXIMUM HEAD HEIGHT: 3.0 MILLIMETERS MINIMUM AND 3.3 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 2355-01-567-4930 TRUCK, BOMB SERVICE NOMINAL THREAD DIAMETER: 6.0 MILLIMETERS WIDTH ACROSS FLATS: 4.0 MILLIMETERS MINIMUM AND 4.1 MILLIMETERS MAXIMUM THREAD PITCH IN MILLIMETERS: 1.0 EXTERNAL THREAD TOLERANCE CLASS: 5G, 6G PART NAME ASSIGNED BY CONTROLLING AGENCY: BUTTON HEAD SOCKET CAP SCREW COLOR: BLACK OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL THREAD SERIES DESIGNATOR: M