Standard Bulb Size

It s referred to as having a medium or standard base.

Standard bulb size.

Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80. 1 888 455 2800 fax 1 508 363 2900. Depending on their size these bulbs can be used in applications ranging from chandeliers wall sconces and pendant lights to basement and garage troffer light fixtures. Light bulb socket sizes chart.

The number following the e indicates the size in mm of the external thread screw. E12 is the smaller candelabra base. 10 8 1 1 4 diameter. Thus a e26 has a 26 mm base diameter.

Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. 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 most commonly used a series light bulb type is an a19 bulb or its metric iec equivalent the a60 bulb which is 19 8 in 2 3 8 in. 1 888 455 2800 fax 1 508 363 2900.

You may see low cost led bulbs using an e27 base on ebay and amazon from foreign suppliers. So an a19 is an a shape bulb and is 2 375 inches in diameter 19 divided by 8. The number designation in the code is usually the width of the bulb at its widest point designated in eighths of an inch. E39 north america e40 goliath es in europe.

E26 is the size of most light bulbs used in the u s. 8 8 1 diameter. Numbers in each code refer to the bulb s diameter in one eighths of an inch. E26 mes in north america e27 es in europe.

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. 60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length. Bulbs with these bases are the most popular of all screw base bulbs. Common sizes of the a bulb are a15 a19 and a21.

7 8 7 8 diameter. Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size.