Base Type Base Type |
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Screw In | Recessed Single Contact |
Brightness Brightness |
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Bulb Trade Number Bulb Trade Number |
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Operating Position Operating Position |
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Estimated Yearly Energy Cost Estimated Yearly Energy Cost |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Rated Life Rated Life |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Brightness
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About Light Appearance
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Screw-In Base Light Bulbs


Use these bulbs in standard sockets, panels, and appliances. Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are commonly used in workspaces. Bulbs with a cool or daylight appearance have white/blue tones and are good for inspecting. A bulb’s estimated yearly energy cost is based on 3 hours of usage per day at $0.11 per kWh.
Halogen bulbs are slightly more energy efficient than incandescent bulbs, but they generate more heat.
Equiv. Incand. Bulb Wattage | Light Appearance | Brightness, lumens | Light Technology | Light Setting | Bulb Shape No. | Bulb Material | Color | Wattage | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Each | |
Pointed Bulb—Miniature Candelabra Base (7/16" Dia.) | ||||||||||||
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120V AC | ||||||||||||
100W | Warm (2,700K) | 1,600 | Halogen | Dimmable | T4 | Glass | Clear | 100W | 1,000 | 12.10 | 0000000 | 000000 |
150W | Warm (2,700K) | 2,800 | Halogen | Dimmable | T4 | Glass | Clear | 150W | 1,000 | 18.10 | 0000000 | 0000 |
120V AC/120V DC | ||||||||||||
250W | Warm (2,900K) | 4,200 | Halogen | Dimmable | T4 1/2 | Glass | Clear | 250W | 2,000 | 30.20 | 0000000 | 0000 |
500W | Warm (2,950K) | 10,450 | Halogen | Dimmable | T4 | Glass | Clear | 500W | 2,000 | 60.30 | 0000000 | 00000 |
Recessed Single-Contact Base Light Bulbs

These slender bulbs are used in lamps and task lights. Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are commonly used in workspaces. A bulb’s estimated yearly energy cost is based on 3 hours of usage per day at $0.11 per kWh. These halogen bulbs are slightly more energy efficient than incandescent bulbs, but they generate more heat.
Wattage | Light Appearance | Brightness, lumens | Operating Position | Bulb Trade Number | Light Technology | Bulb Shape No. | Color | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Bulb Dia. | O'all Lg. | Pkg. Qty. | Pkg. | |
Tubular Bulb—1/4" Base Dia. | ||||||||||||||
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120V AC | ||||||||||||||
500W | Not Rated | 9,500 | Horizontal | 500T3Q/CL, FCL | Halogen | T3 | Clear | 2,000 | 60.30 | 3/8" | 4 5/8" | 1 | 000000 | 000000 |
120V AC/120V DC | ||||||||||||||
250W | Warm (2,900K) | 4,500 | Horizontal, Base Down, Base Up | 250T3Q/CL | Halogen | T3 | Clear | 1,500 | 30.11 | 3/8" | 3 1/8" | 1 | 0000000 | 0000 |
300W | Warm (2,900K) | 5,300 | Horizontal | 300T3Q/CL, EHM | Halogen | T3 | Clear | 1,500 | 36.14 | 3/8" | 4 11/16" | 1 | 000000 | 0000 |
1,000W | Neutral (3,200K) | 27,000 | Horizontal | 1000T4Q/CL, FCM | Halogen | T4 | Clear | 300 | 120.45 | 1/2" | 4 3/4" | 1 | 0000000 | 00000 |
240V AC/240V DC | ||||||||||||||
1,500W | Warm (2,900K) | 30,000 | Horizontal | 1500T3Q/P/CL | Halogen | T3 | Clear | 1,500 | 180.70 | 3/8" | 10 1/16" | 1 | 000000 | 00000 |
277V AC | ||||||||||||||
1,500W | Warm (2,900K) | 34,000 | Horizontal | 1500T3Q/CL | Halogen | T3 | Clear | 2,000 | 180.70 | 3/8" | 10" | 1 | 0000000 | 00000 |