Standard Lamp Light Bulb Size

Light bulb socket sizes chart.

Standard lamp light bulb size.

Other sizes with a data sheet in iec 60064 are a50 a55 a67 a68 a71 a75 and a80. From top left to bottom right. Although a shaped lamps are similar the difference is in size. 60 mm wide at its widest point and approximately 4 3 8 inches 110 mm in length.

Here is the light bulb socket size chart to help you determine what size do you need your light bulb to be. 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. 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.

Light bulbs with decorative filaments and shapes such as edison bulbs are the finishing touch for edgy industrial style lights or any fixture where the light source. An a19 light bulb is 19 eighths of an inch or 19 8 in diameter. 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. A19 led filament bulbs in ceiling fan fixture a21 led bulbs in bedroom lamps a19 gold tint led filament bulb in porch light fixture a19 led fireworks bulbs in string lights.

1 888 455 2800 fax 1 508 363 2900. 1 888 455 2800 fax 1 508 363 2900. Place edge of the light bulb to be identified on the top end of the scale and measure the approximate diameter by reading the measurement at the opposite edge of the light bulb. The a19 and a21 lamps are usually blended due to their similar characteristics.

Usually both can be used for the same application but remember that the a21 is larger and may not fit on table lamps ceiling fans etc. To determine a light bulb size use the full size scale shown calibrated in eighths. Standard arbitrary a bulbs are the most widely used and thought of when it comes to household lighting. 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.

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