M20-2.5 x 110mm DIN 931 Class 8.8 Zinc Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 110.0 MILLIMETERS NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 18.28 MILLIMETERS MINIMUM AND 19.12 MILLIMETERS MAXIMUM WIDTH BETWEEN FLATS: 46.0 MILLIMETERS NOMINAL NOMINAL THREAD DIAMETER: 20.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 2.5 MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: ISO M