标准号:IS 2769-1969
发布日期:1969/12/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:Dimensions and tolerances for squares and square holes for hand wheels, spindles and such other general engineering purposes.Note - Dimansions of driving squares are outside the purview of this standard ( see IS : 1850-1961 ).