M10-1.5 x 40mm DIN 7991 Hex Drive Grade A2-70 Stainless Steel Flat Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 40.0 MILLIMETERS NOMINAL HEAD STYLE: C50 FLAT COUNTERSUNK HEAD DIAMETER: 19.5 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON NOMINAL THREAD DIAMETER: 10.0 MILLIMETERS WIDTH ACROSS FLATS: 6.0 MILLIMETERS MINIMUM AND 6.1 MILLIMETERS MAXIMUM THREAD PITCH IN MILLIMETERS: 1.5 EXTERNAL THREAD TOLERANCE CLASS: 6G MATERIAL: STEEL CORROSION RESISTING OVERALL THREAD SERIES DESIGNATOR: M