E17灯头止规 7006-28F-1
Not Go gauge for E17 caps on finished lamps
目的：
Purpose:
检验成品灯上E17灯头螺纹外径（尺寸d）。
To check the minium outside (major) diameter of the screw thread, dimension d, of E17 caps on finished lamps.
检验：
Testing:
当量规套在成品灯（灯头向上）的灯头螺纹上时，灯头中心触点不应凸出X面。检验仅利用量规自身质量进行。
When the gauge is placed over the thread of the cap on a finished lamp, held cap uppermost, the central contact shall not project beyond surface X.
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E17灯头通规 7006-27K-1
Go gauge for E17 caps on finished lamps 7006-27K-1
量规入口处的螺纹边缘尖锐部分应以0.2mm～0.3mm的半径倒圆。
The sharp part of the edge of the thread at the entrance of the gauge shall be broken with a radius of 0.2mm to 0.3mm.
目的：
Purpose:
检验成品灯上E17灯头螺纹尺寸和尺寸T1 min。
To check the maxium dimensions of the screw thread and dimension T1 min. of E17 caps on finished lamps.
检验：
Testing:
当成品灯上的灯头完全旋入量规内时，灯头中心触点应与X面接触。当灯从量规中取出时，至少应旋转2整圈才能脱离螺纹。
When a cap on a finished lamp has been screwed into the gauge as far as it will go, the central contact shall touch surface X. When the lamp is removed from the gauge, at least two full turns shall be required to disengage the threads.
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