标准摘要
[中文适用范围]： 给出了带有金属或塑料灯罩环的金属或塑料和陶瓷灯座的螺纹限制尺寸。还包括灯罩支架环和灯座的“通过”和“不通过”量规的尺寸。 [外文原描述]： Gives limit dimensions of thread for metal or plastic and ceramic lampholders with shade holder rings made of metal or plastic. Dimensions for 'Go' and 'Not go' gauges for shade holder rings and for lampholders are also included.
英文名称Standard sheets for barrel thread for E14 and E27 lampholders with shade holder ring