M8-1.25 x 35mm DIN 7991 Hex Drive Class 10.9 Black Oxide Finish Alloy Steel Flat Socket Cap Screw / HEAD STYLE: C5 HEXAGON COUNTERSUNK HEAD DIAMETER: 15.785 MILLIMETERS NOMINAL INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 3930-01-641-7505 PART NAME ASSIGNED BY CONTROLLING AGENCY: M8 FLAT SOCKET HEAD SCREW SPECIAL FEATURES: FULL THREAD; BODY DIAMETER: 7.89 MM; LENGTH: 35.00 MM; MATERIAL: STEEL OVERALL