MOUNTING SLOT WIDTH: 0.125 IN. NOMINAL; BORE LENGTH: 1.350 IN. NOMINAL; FORK WIDTH: 2.500 IN. NOMINAL; SECURING HOLE SIZE: 0.400 IN. DIA; DISTANCE FROM MOUNTING FACILITY CENTERLINE TO ARCH CENTERLINE: 4.000 IN. NOMINAL; ARCH INSIDE RADIUS: 1.375 IN. NOMINAL