Light Bulb Base Type Reference
Search common bulb base and socket codes including Edison screw bayonet GU and bi-pin types.
Common light bulb base/socket codes — the letter is the base shape, the number is the diameter or pin spacing in millimeters.
About this tool
Light Bulb Base Type Reference is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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