Light Bulb Socket Sizes Chart
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.
You can even use this chart as a lamp socket chart.
| Designation | Base major diameter (thread external) | Name | Application | IEC 60061-1 standard sheet |
|---|---|---|---|---|
| E5 | 5 mm | Lilliput Edison Screw (LES) | Indicator lights, decorative lights | 7004-25[11] |
| E10 | 10 mm | Miniature Edison Screw (MES), C6 | Flashlights, bicycle lights | 7004-22 |
| E11 | 11 mm | Mini-Candelabra Edison Screw (mini-can) | 120 V halogen mini-candelabra | (7004-6-1) |
| E12 | 12 mm | Candelabra Edison Screw (CES), C7 | 120 V candelabra/night lamp | 7004-28 |
| E14 | 14 mm | Small Edison Screw (SES) | 230 V candelabra/chandelier, night lamps, and some pendant lights. | 7004-23 |
| E17 | 17 mm | Intermediate Edison Screw (IES), C9 | 120 V appliance / Outdoor Christmas | 7004-26 |
| E26 | 26 mm | [Medium] (one-inch) Edison Screw (ES or MES) | Standard 120 V lamps | 7004-21A-2 |
| E27 | 27 mm | [Medium] Edison Screw (ES) | Standard 230 V lamps | 7004-21 |
| E39 | 39 mm | Single-contact (Mogul- in America) Goliath Edison Screw (GES) | 120 V 250+ W industrial | 7004-24-A1 |
| E40 | 40 mm | (Mogul) Goliath Edison Screw (GES) | 230 V 250+ W industrial | 7004-24 |
Screw Bases for light bulbs
Here is the photo to show you how all the light bulb sizes look as well as the size in milliliters and E designations associated. These are standard light bulb thread sizes.
In case you are looking for a replacement for your light bulb because of flickering, here is a great video showing you how you can fix that problem:
