The shape part of the edge of the thread shall be broken with radius of 0.2mm to 0.3mm.

量规螺纹边口应以0.2~0.3mm半径倒圆。

Purpose目的：

To check the maximum dimensions of the screw thread and dimension T1 minimum of caps on finished lamps.

检查成品灯灯头螺纹大尺寸和T1的小值

Testing 测试方法：

When the cap on a finished lamp has been screwed into the gauge as far as it will go, the center contact shall be co-planar with, or project beyond, surface X.

当成品灯上的灯头*旋入量规内时，灯头中心触点应与X面共面或凸出X面。

测试图纸：



测试参数：