M10-1.5 x 20mm ISO 7380 Hex Drive Class 10.9 Black Oxide or Plain Finish Alloy Steel Button Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 17.3 MILLIMETERS NOMINAL FASTENER LENGTH: 25.4 MILLIMETERS NOMINAL HEAD STYLE: C30 BUTTON HEAD DIAMETER: 17.3 MILLIMETERS NOMINAL HEAD HEIGHT: 5.4 MILLIMETERS NOMINAL INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: MASTIFF 3 NOMINAL THREAD DIAMETER: 10.0 MILLIMETERS WIDTH ACROSS FLATS: 2.0 MILLIMETERS NOMINAL THREAD PITCH IN MILLIMETERS: 1.5 EXTERNAL THREAD TOLERANCE CLASS: 6G COLOR: BLACK OVERALL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL THREAD SERIES DESIGNATOR: M