M12-1.75 x 40mm ISO 4762 Hex Drive Class 12.9 Black Oxide Finish Alloy Steel Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 30.0 MILLIMETERS NOMINAL FASTENER LENGTH: 30.5 MILLIMETERS MINIMUM AND 40.5 MILLIMETERS MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 11.6 MILLIMETERS MINIMUM AND 12.0 MILLIMETERS MAXIMUM WIDTH BETWEEN FLATS: 10.0 MILLIMETERS MINIMUM AND 10.2 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 12.0 MILLIMETERS WIDTH ACROSS FLATS: 11.4 MILLIMETERS MINIMUM THREAD PITCH IN MILLIMETERS: 1.8 EXTERNAL THREAD TOLERANCE CLASS: 5G6G PART NAME ASSIGNED BY CONTROLLING AGENCY: M12-1.75X40MM CL 12.9 DIN 912 PLAIN SOCKET HEAD CAP SCREW MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: M