M8-1.25 x 20mm DIN 933 Class 10.9 Plain Finish Hex Cap Screw / THREAD CLASS: 6G THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM FASTENER LENGTH: 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.6094 INCHES NOMINAL WIDTH BETWEEN FLATS: 1.500 INCHES NOMINAL END ITEM IDENTIFICATION: MRAP - COMMON NSN - USED ON 4 MRAP VARIANTS AND 1 OTHER WEAPON SYSTEM; MRAP BUFFALO MK2A2 NOMINAL THREAD DIAMETER: 8.0 MILLIMETERS MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH HARDNESS RATING: 33.0 ROCKWELL C MINIMUM OVERALL THREAD PITCH IN MILLIMETERS: 1.25 PART NAME ASSIGNED BY CONTROLLING AGENCY: BOLT,HH ADJ LK M8 X 20 MATERIAL: STEEL PROPERTY CLASS 10.9 OVERALL SURFACE TREATMENT: OIL OVERALL THREAD SERIES DESIGNATOR: M