This standard specifies the types and dimensions of screw-on lampholders. This standard applies to the design and production of screw-type lampholders for electric light sources, and also applies to the design of electric light source products. Note: For the types and sizes of E26 and E39 lampholders not used in my country, please refer to the leaflets in IEC 60061-2: 7005-20-5 (E26 lampholders), 7005-24A (E39 lampholders).
GB 19148.1-2003 history
2008GB/T 19148.1-2008 Types and dimensions of lampholder.Part 1: Screw lampholder
2003GB 19148.1-2003 Types and dimensions of edison screw lampholders
GB 19148.1-2003 Types and dimensions of edison screw lampholders was changed to GB/T 19148.1-2008 Types and dimensions of lampholder.Part 1: Screw lampholder.