4W Light Bulbs | McMaster-Carr

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42 Products

About Brightness and Light Appearance

Find the right lumen level to brighten your space. Then, compare the way warm, neutral, and cool lighting affect the appearance of everyday objects.

Screw-In-Base Light Bulbs


Bent Tip Bulb	Cone Bulb	Tubular Bulb	Globe Bulb

Your go-to bulbs for everyday use in standard sockets.

Use the light appearance to match older bulbs in your facility.

Warm (2,700 K)—A 2,700K (warm) light appearance resembles incandescent bulbs.

Warm (3,000 K)—A 3,000K (warm) light appearance resembles halogen bulbs.

		Bulb				Light								Small Pack			Large Pack
	Equivalent Incandescent Bulb Wattage	Shape No.	Material	Dia.	Color	Appearance	Intensity Setting	Tech.	Color Rendering Index	Brightness	Wattage	Rated Life	Overall Lg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Bent Tip Bulb—Medium (Standard Household) Base (1 1/16" Dia.)







				120V AC

				40 W	CA10	Glass	1 3/8"	Frosted	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4 3/8"	1	9236N192	00000	24	9236N193	000000


				40 W	CA10	Glass	1 3/8"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4 3/8"	1	1721K278	0000	24	1721K279	00000


				Bent Tip Bulb—Candelabra Base (1/2" Dia.)







								120V AC

								40 W	CA10	Glass	1 3/8"	Frosted	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4 3/4"	1	9236N198	0000	24	9236N199	00000


								40 W	CA10	Glass	1 3/8"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4 3/4"	1	1721K285	0000	24	1721K286	00000


								Cone Bulb—Medium (Standard Household) Base (1 1/16" Dia.)







												120V AC

												40 W	B11	Glass	1 3/8"	Frosted	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	3 5/8"	1	9236N215	0000	24	9236N216	00000


												40 W	B11	Glass	1 3/8"	Clear	Cool (5,000 K)	Dimmable	LED	92	350 lm	4 W	15,000 hr.	3 5/8"	1	1721K296	0000	24	1721K297	00000


												Cone Bulb—Candelabra Base (1/2" Dia.)







																120V AC

																4 W	C7	Glass	7/8"	Clear	Warm (2,400 K)	Dimmable	Incandescent	100	15 lm	4 W	3,000 hr.	2 1/8"	10	1628K175	00000	—	———	0


																40 W	B11	Glass	1 3/8"	Frosted	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4"	1	9236N219	0000	24	9236N221	00000
																40 W	B11	Glass	1 3/8"	Frosted	Cool (5,000 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4"	1	9236N222	0000	24	9236N223	00000
																40 W	B11	Glass	1 3/8"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4"	1	1721K343	0000	24	1721K344	00000
																40 W	B11	Glass	1 3/8"	Clear	Cool (5,000 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	4"	1	1721K345	0000	24	1721K346	00000


Globe Bulb—Medium (Standard Household) Base (1 1/16" Dia.)







																120V AC

																40 W	G16 1/2	Glass	2"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	3 1/8"	1	1721K352	0000	24	1721K353	00000


																40 W	G16 1/2	Glass	2"	Clear	Cool (5,000 K)	Dimmable	LED	92	350 lm	4 W	15,000 hr.	3 1/8"	1	1721K354	0000	24	1721K355	00000
																40 W	G40	Glass	4 7/8"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	5 1/2"	1	1449T49	0000	—	———	0
				40 W												G40	Glass	4 7/8"	Clear	Warm (2,700 K)	Dimmable	LED	90	350 lm	4 W	15,000 hr.	6 1/2"	—	———	0	24	1721K361	000000


				Tubular Bulb—Intermediate Base (11/16" Dia.)







																120V AC

																40 W	T6 1/2	Glass	13/16"	Clear	Warm (3,000 K)	Dimmable	LED	90	400 lm	4 W	15,000 hr.	5 1/8"	1	9039N128	0000	24	9039N129	00000

Blacklight Inspection Bulbs

Illuminate fluorescent dyes, particles, and residues to spot defects. These bulbs shine UV light to reveal material that isn’t visible with standard lighting.

Tubular Bi-Pin Base

Fluorescent

Blacklight

Cannot Be Sold To—Bulbs cannot be sold to Canada because they exceed local regulatory limits on mercury. Those that cannot be sold to Vermont are restricted by product regulations.

	Color	Bulb Trade No.	Bulb Base No.	Rated Life, hr.	Wavelength Type	Wavelength, nm	Cannot Be Sold To		Each
T5 Bulb Shape (5/8" Diameter Bulb)







	Fluorescent Blacklight

	6"	4	Glass	Blue	F4T5	G5	5,000	UV-A	350	Canada, Vermont	8311K41	000000

Bi-Pin-Base Tubular Light Bulbs


	T5 Bulb Shape

Replace your fluorescent bulbs or upgrade to LED. These light bulbs are the most common tubular bulbs for fixtures inside plants, warehouses, and offices. Select a light appearance to match your existing lighting. If you’re not sure what temperature you need, choose a bulb with more than one light appearance. You can adjust the temperature with a switch.

LED—LED bulbs last longer and are more efficient than fluorescent bulbs. You can choose bulbs that work with or without a ballast—some bulbs can do both.

Ballast-Bypass LED—Ballast-bypass bulbs work with sockets that are wired directly to the power source, which cuts down on maintenance. If your fixture has a ballast, you’ll need to remove it.

Plastic-Coated Glass Bulb—Plastic-coated glass bulbs are shatter resistant. If the glass breaks, the coating keeps shards from falling.

										Small Pack			Large Pack
	Overall Lg.	Equivalent Fluorescent Bulb Wattage	Light Appearance	Brightness	Color Rendering Index	Bulb Material	Equiv. Fluorescent Bulb Trade No.	Wattage	Rated Life, hr.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
T5 Bulb Shape (5/8" Dia.)







				LED—Ballast Bypass (Type B)

				6"	4 W	Neutral (4,000 K)	150 lm	82	Plastic-Coated Glass	F4T5	2 W	50,000	2	1562K84	000000	10	1562K85	000000


				12"	8 W	Neutral (4,000 K)	400 lm	80	Glass	F8T5	4 W	50,000	1	1665N33	0000	10	1665N34	00000

Twist-and-Lock-Base Floodlight Bulbs

Lock these bulbs into GU10 sockets with a twist. Often used in recessed can fixtures and track lighting, they provide a focused beam of light.

Selectable Light Appearance—Bulbs with a selectable light appearance have a switch on the top, so you can match other lights in your room.

			Beam		Light				Bulb									Pkg. of 3		Pkg. of 18
	Equiv. Incandescent Bulb Wattage, W	Bulb Base No.	Pattern	Angle	Appearance	Intensity Setting	Tech.	Brightness, lm	Material	Dia.	Color Rendering Index	Wattage, W	Rated Life, hr.	Features	Overall Lg.	Color	Environment		Pkg.		Pkg.
MR16 Bulb







				120V AC

				35	GU10	Flood	40°	Warm (3,000 K) Neutral (4,000 K) Cool (5,000 K)	Dimmable	LED	300	Plastic	2"	90	4	25,000	Selectable Light Appearance	2"	Clear	Wet	8851N12	000000	8851N13	000000

Wedge-Base Miniature Light Bulbs


	Miniature Wedge Base

Often used in automotive dashboards, instrument panels, appliances, and indicators. A flat, pinched base presses directly into the socket to hold these bulbs in place. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

									Bulb
	Bulb Trade No.	Voltage, V DC	Wattage	Brightness	Light Technology	Rated Life	Color	Overall Lg.	Dia.	Material	Shape No.	Bulb Base No.	Pkg. Qty.		Pkg.
Miniature Base (0.37" Wd.)







				Tubular Bulb

				901	12.8	4 W	47 lm	Incandescent	500 hr.	Clear	1.49"	0.63"	Glass	T5	W2.1x9.2d	10	1505K217	00000

Bi-Pin-Base Floodlight and Spotlight Bulbs

MR16 Bulb Shape

Often used in display and landscape lighting, these small bulbs produce a focused beam of light. Bulbs that are 50W or higher are often used in overhead projectors and microscopes. They’re brightest at the center of their beam angle; the edges of the beam are about half as bright. The narrower the beam, the more concentrated the light.

LED—LED bulbs last longer and are more efficient than halogen bulbs. They generate little heat and withstand vibration.

Selectable Light Appearance—Bulbs with a selectable light appearance have a switch that lets you match other lights in your room.

				Light					Bulb							Pkg. of 3		Pkg. of 18
	Equiv. Incandescent Bulb Wattage, W	Bulb Base No.	Beam Angle	Appearance	Intensity Setting	Tech.	Brightness, lm	Bulb Trade No.	Material	Dia.	Color Rendering Index	Wattage, W	Rated Life, hr.	Overall Lg.	Features		Pkg.		Pkg.
MR16 Bulb Shape







				12V AC/12V DC

				35	GU5.3	40°	Warm (3,000 K) Neutral (4,000 K) Cool (5,000 K)	Dimmable	LED	300	FMW	Glass	2"	90	4	25,000	1 3/4"	Selectable Light Appearance	8849N17	000000	8849N18	000000

Bi-Pin-Base Miniature Light Bulbs


Tubular Bulb

Often used for general task lighting and in flashlights, projectors, and microscopes, these bulbs are small but very bright. To replace a bi-pin bulb without a trade number, match the base number, voltage, and wattage. The base number reflects the pin spacing from center to center in millimeters—for example, G4 base pins are 4 mm apart. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

LED—Last longer and are more efficient than other technologies.

										Bulb
	Bulb Trade No.	Voltage	Wattage	Equiv. Incandescent Bulb Wattage, W	Brightness	Light Technology	Rated Life	Color	Overall Lg.	Dia.	Material	Shape No.	Pkg. Qty.		Pkg.
G4 Base (4 mm Pin Center-to-Center)







				Tubular Bulb

				JC35	12V AC/12V DC	4 W	35	300 lm	LED	10,000 hr.	Clear	1.7"	1/2"	Plastic	T4	1	2288K19	00000

Screw-In-Base Miniature Light Bulbs

Tubular

Bulb

These bulbs are sized to fit tight spaces such as signs, control panels, indicators, and flashlights. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

									Bulb
	Bulb Trade No.	Voltage	Wattage	Brightness	Light Technology	Rated Life	Color	Overall Lg.	Dia.	Material	Shape No.	Pkg. Qty.		Pkg.
E12 Candelabra Base (1/2" Dia.)







				Tubular Bulb

				1841	24V AC/24V DC	4 W	21 lm	Incandescent	250 hr.	Clear	1.5"	0.5"	Glass	T4	10	8607K64	00000

Ultraviolet Disinfecting Light Bulbs

Tubular Bi-Pin Base

Disinfect air, water, and surfaces without chemical cleaners. These light bulbs use shortwave ultraviolet radiation, also called UV-C, to kill viruses and bacteria. They’re often used in surface cleaning lights, air purifiers, and water treatment systems.

Ultraviolet radiation can harm your skin and eyes. For safety, install these bulbs in fixtures with UV protection or wear UV-protective gear while using them.

Rated Life—The length of time these bulbs will effectively kill germs. Replace them after the listed period, even if they still light up.

Cannot Be Sold To—Bulbs cannot be sold to Canada due to import regulations. Those that cannot be sold to outside the United States are due to pesticide regulations.

	Bulb Trade No.	Bulb Base No.	Rated Life, hr.	Wavelength Type	Wavelength, nm	Cannot Be Sold To		Each
Tubular Bi-Pin Base







	T5 Bulb (5/8" Bulb Dia.)

	5 1/4"	4	Glass	G4T5	G5	6,000	UV-C	254	Outside United States	9188K22	000000