What Size Base Is A Standard Light Bulb

Screw in bulbs use a base called an edison screw or es base.

What size base is a standard light bulb.

Let s talk about light bulb groups their bulb codes and what applications those bulbs are typically used for. The first letter designates the shape or form of the base and the number represents the width of the base normally in millimeters. There are four commonly used thread size groups for. E26 is 26 mm and the e27 is 27 mm diameter.

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. Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types. 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. However an e26 bulb can fit in e27 base and an e27 bulb can fit in e26 base without problem.

It s used for nightlight bulbs and sometimes for decorative light bulbs used in chandeliers and over bathroom mirrors. E17 intermediate base is in between these two sizes. The candelabra e12 has a diameter of 12 millimeters. E12 is the smaller candelabra base.

A19 led filament bulbs in ceiling fan fixture a21 led bulbs in bedroom lamps a19 gold tint. A further explanation of the light bulb base sizes you can look at the letter number references e12 e17 and e26 to help understand a bulbs base style and size. Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size. Bulbs with these bases are the most popular of all screw base bulbs.

40w equivalent a19 led light bulb soft white 2700k ul listed e26 standard base non dimmable led light bulb 4 pack 4 7 out of 5 stars 1 773 7 59 7. A15 a19 a21 and a25 from top left to bottom right. E26 is the size of most light bulbs used in the u s. Or use our universal bulb finder to shop by bulb type or screw base.

1 888 455 2800 fax 1 508 363 2900. It s referred to as having a medium or standard base. Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. Unlike the light bulb shapes the number in the light bulb base measures the light bulb base diameter in millimeters.