M4-0.7 x 16mm DIN 7991 Hex Drive Class 10.9 Black Oxide Finish Alloy Steel Flat Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 16.0 MILLIMETERS NOMINAL FASTENER LENGTH: 16.0 MILLIMETERS NOMINAL HEAD STYLE: C50 FLAT COUNTERSUNK HEAD DIAMETER: 7.64 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: 01-567-4930 NOMINAL THREAD DIAMETER: 4.0 MILLIMETERS WIDTH ACROSS FLATS: 2.52 MILLIMETERS MINIMUM AND 2.60 MILLIMETERS MAXIMUM THREAD PITCH IN MILLIMETERS: 0.7 COUNTERSINK ANGLE: 90.0 DEGREES NOMINAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL THREAD SERIES DESIGNATOR: M