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
mm
Cap
mm
Pitch
mm
Thread Length
Cover Glass mm
Thread Length
Cap min. mm
Glasg 74.5 73.5 - 74.5 69.5 - 72.5 7.5 19.0 - 21.0 22.0
Glasg 84.5 83.5 - 84.5 78.0 - 81.0 7.5 21.0 - 23.0 24.0
Glasg 99 98.0 - 99.0 92.5 - 95.5 7.5 24.0 - 26.0 27.0
Glasg 123.5 122.5 - 123.5 117.0 - 120.0 7.5 27.0 - 29.0 30.0
Glasg 158 156.0 - 158.0 149.0 - 153.5 12.0 37.0 - 40.0 42.0
Glasg 188 186.0 - 188.0 179.0 - 183.5 12.0 42.0 - 45.0 47.0

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