Standard Light Bulb Base Type

The number that follows the a designation indicates the nominal major diameter of the bulb either in one eighth.

Standard light bulb base type.

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. Bulbs with these base types are available in many different styles. Pin type bases are normally used for track lighting landscape bulbs. It has a pear like shape and is typically fitted to either an edison screw or a bayonet cap base.

Medium standard base code. Bulbs with these bases are the most popular of all screw base bulbs. Look at your fixture to determine its base type. Common bulbs with e26.

Screw in bulbs use a base called an edison screw or es base. 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. 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. Look at your fixture to determine its base type.

This is an epic light bulb buying guide that you need when putting in light fixtures or you need to buy a bulb. Shoppers of led light bulbs often confuse the specifications for base type e26 or e27 and bulb shape a19.