"MOUNTING SLOT WIDTH: 0.126 IN. MIN AND 0.150 IN. MAX; BORE LENGTH: 1.250 IN. NOMINAL; FORK WIDTH: 5.307 IN. MIN AND 5.317 IN. MAX; MATERIAL HARDNESS RATING: 28.0 MIN AND 63.0 MAX ROCKWELL C; SECURING HOLE SIZE: 1/2-20NF-2B, RH THD; DISTANCE FROM MOUNTING FACILITY CENTERLINE TO ARCH CENTERLINE: 5.500 IN. NOMINAL; ARCH INSIDE RADIUS: 2.750 IN. NOMINAL; FSC APPLICATION DATA: SHIFTING 1ST AND 2ND SPEED, TRANSMISSION"