标准摘要
[中文适用范围]： IEC 出版物 390 (1972) 的第一个补充给出了按原始英制尺寸制成的主轴端部的尺寸和公差。 [外文原描述]： Contains dimensions and tolerances for spindle ends made to original inch dimensions. The contents of the corrigendum of September 1979 have been included in this copy.
英文名称First supplement - Dimensions of spindle ends for manually operated electronic components