上海吉都国际贸易有限公司

Electric lighting fittings DIN 40450

DIN 40450 has been deleted without replacement. Nevertheless still cover glasses and caps using this thread are still produced. Two examples of companies still producing under this standard are RZB (Rudolf Zimmernann, Bamberg GmbH) and Ferraz Shawmut (Lindner). Even the screw joint with the self-sealing grommet is using Pg.

Thread Size	Cover Glass	Cap	Pitch	Thread Length	Thread Length
Thread Size	mm	mm	mm	Cover Glass mm	Cap min. mm
Glasg 74.5	73.5 - 74.5	69.5 - 72.5	7.5	19.0 - 21.0	22
Glasg 84.5	83.5 - 84.5	78.0 - 81.0	7.5	21.0 - 23.0	24
Glasg 99	98.0 - 99.0	92.5 - 95.5	7.5	24.0 - 26.0	27
Glasg 123.5	122.5 - 123.5	117.0 - 120.0	7.5	27.0 - 29.0	30
Glasg 158	156.0 - 158.0	149.0 - 153.5	12	37.0 - 40.0	42
Glasg 188	186.0 - 188.0	179.0 - 183.5	12	42.0 - 45.0	47