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IEC 60399:1972 ed1.0

Заменен
Standard sheets for barrel thread for E14 and E27 lampholders with shade holder ring — 4 стр.
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.
ICS
29.140.10 Lamp caps and holders / Цоколи и патроны для ламп