M8-1.25 x 30mm ISO 4762/DIN 912 Hex Drive Class 12.9 Zinc Finish Alloy Steel Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 22.00 MILLIMETERS MINIMUM AND 22.36 MILLIMETERS MAXIMUM FASTENER LENGTH: 22.00 MILLIMETERS MINIMUM AND 22.36 MILLIMETERS MAXIMUM HEAD STYLE: C48 FLAT FILLISTER HEAD DIAMETER: 12.73 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM HEAD HEIGHT: 7.64 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 3930015999978 NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS WIDTH ACROSS FLATS: 6.02 MILLIMETERS MINIMUM AND 6.14 MILLIMETERS MAXIMUM THREAD PITCH IN MILLIMETERS: 1.25 PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW,CAP,HEXAGON MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: ISO 898 ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941M ASSN STD SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR: M