Here are Interchange Tables for various models.

Product Line Cam Followers SMITH-TRAX Bearings Aerospace Bearings Custom & Ancillary Bearings Dril Jig Bushing   Engineering Section Interchange Tables Engineering Capabilities Fractional Chart SMITH-TRAX Intro Aerospace Intro Drill Jig Intro   Interchange Tables for various models Engineering Capabilities Fractional Chart SMITH-TRAX Introduction Aerospace Introduction Drill Jig Introduction