M12-1.75 x 55mm DIN 931 Class 10.9 Zinc Finish Hex Cap Screw / THREAD CLASS: 6H THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 30.0 MILLIMETERS NOMINAL FASTENER LENGTH: 54.40 MILLIMETERS MINIMUM AND 55.60 MILLIMETERS MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 6.4 MILLIMETERS NOMINAL WIDTH BETWEEN FLATS: 17.0 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: MRAP-COUGAR NOMINAL THREAD DIAMETER: 12.0 MILLIMETERS MINIMUM TENSILE STRENGTH: 116000 POUNDS PER SQUARE INCH HARDNESS RATING: 21.0 ROCKWELL C MINIMUM OVERALL THREAD PITCH IN MILLIMETERS: 1.75 MATERIAL: STEEL PROPERTY CLASS 10.9 OVERALL SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: M