Standard Light Bulb Base Type

3 illustrated charts showcase the 56 different types of light bulbs based on shape base and size.

Standard light bulb base type.

The number that follows the a designation indicates the nominal major diameter of the bulb either in one eighth. Shoppers of led light bulbs often confuse the specifications for base type e26 or e27 and bulb shape a19. The a series light bulb is the classic glass light bulb shape that has been the most commonly used type for general lighting service gls applications since the early 20th century. Most common light bulb uses including lamps recessed flush mount flood lights are going to have one of the first three base types shown above.

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 vanity lights. Common bulbs with e26. Pin type bases are normally used for track lighting landscape bulbs. This base was developed by thomas edison for the first light bulbs and is still in use today.

This is an epic light bulb buying guide that you need when putting in light fixtures or you need to buy a bulb. 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. Screw in bulbs use a base called an edison screw or es base. Look at your fixture to determine its base type.

Bulbs with these bases are the most popular of all screw base bulbs. Bulbs with these base types are available in many different styles.