This second part of Pakistan Standard gives boundary dimensions of radial bearings in diameter series 7.
Boundary dimensions of diameter series 8, 9, 0, 1, 2, 3 and 4 are given in PS : 991/Part I—Rolling Bearings—Radial Bearings, Boundary Dimensions—General Plan Diameter Series 8,9,0,1,2,3 and 4.
PS 992-1974 history
1974PS 992-1974 SPECIFICATION FOR ROLLING BEARINGS RADIAL BEARINGS BOUNDARY DIMENSIONS GENERAL PLAN