Standard Light Bulb Socket Sizes

48 mm wide at its widest point.

Standard light bulb socket sizes.

The a15 bulb is 15 8 in 1 7 8 in. Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. 1 888 455 2800 fax 1 508 363 2900.

Light bulb socket sizes chart. The image below compares our g40 and g50 bulbs in c7 and c9 base sizes. Take the number and divide by 8 and that is the diameter of the bulb at its widest point. The letter e before a number indicates it s an edison bulb.

You can compare most common e size designations with a thread diameter see the specific light bulb name for that size see what are the most common applications and even see the official standard for light bulbs. Light bulbs come in a variety of shapes and sizes and are generally categorized by their bases the part that screws into a light socket. 1 888 455 2800 fax 1 508 363 2900. To help you understand what shapes and sizes you will need we have created the following guide on light bulb sizes.

Bulb base the final important piece to selecting the right bulb for your application is the bulb base. No matter how the end user places the light bulb base into the socket it will always turn and lock into the same position every time creating a fail safe for the light bulb s operation. The image below compares our g50 bulbs in all three base sizes. You don t want to buy a bulb only to find that it doesn t fit in the socket.

They are commonly used for general lighting in standard light fixtures such as ceiling lights lamps can lights outdoor spotlight and flood light fixtures and. The light bulb base and socket are manufactured in a way that predetermines the light bulb s position in the socket. Bulbs with these bases are the most popular of all screw base bulbs. Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80.

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