21W Light Bulbs | McMaster-Carr

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16 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.

Dual-Filament Wedge-Base Miniature Light Bulbs


Tubular	Wide Wedge Base

Often used in taillights and brake lights. These bulbs have two filaments that operate at different brightness levels, with the second filament shining brighter when activated. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

					Light					Bulb
	Bulb Trade No.	Voltage	Wattage	Brightness	Tech.	Intensity Setting	Rated Life	Overall Lg.	Color	Material	Dia.	Shape No.	Pkg. Qty.		Pkg.
Wide Base (0.63" Wd.)







				Tubular Bulb

				7443NA	12V AC	5 W 21 W	21 lm 280 lm	Incandescent	2 Way	1,000 hr. 500 hr.	1.87"	Amber	Glass	0.83"	T6 1/2	1	1505K239	00000

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.

Fluorescent—Fluorescent bulbs contain small amounts of mercury. For disposal information, visit www.epa.gov/cfl.

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.

Cannot Be Sold To—Bulbs that cannot be sold to the listed areas do not meet local regulations for mercury content or energy efficiency.

												Small Pack			Large Pack
	Overall Lg.	Equivalent Fluorescent Bulb Wattage	Light Appearance	Brightness	Color Rendering Index	Bulb Material	Bulb Trade No.	Equiv. Fluorescent Bulb Trade No.	Wattage	Rated Life, hr.	Cannot Be Sold To	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
T5 Bulb Shape (5/8" Dia.)







				LED—Ballast Bypass (Type B)

				34"	21 W	Neutral (3,500 K)	1,400 lm	82	Glass	—	F21T5, FP21	11 W	50,000	—	6	1665N31	000000	25	1665N16	0000000


				34"	21 W	Neutral (4,100 K)	1,500 lm	82	Glass	—	F21T5, FP21	11 W	50,000	—	6	1665N32	00000	25	1665N17	000000




						Fluorescent

						34"	21 W	Neutral (3,500 K)	2,100 lm	85	Glass	F21T5, FP21	—	21 W	20,000	California, Canada, Colorado, Hawaii, Maine, Minnesota, Oregon, Rhode Island	6	1562K23	00000	40	1562K73	000000


						34"	21 W	Neutral (4,100 K)	2,100 lm	85	Glass	F21T5, FP21	—	21 W	20,000	California, Colorado, Hawaii, Maine, Minnesota, Oregon, Rhode Island	6	1562K52	00000	—	———	0

Bayonet-Base Miniature Light Bulbs


Tapered Bulb	Small Bayonet Base

Replace bulbs in tight spaces, such as those in indicators and vehicle lights. Pins on either side of the base lock these bulbs into sockets.

							Bulb
	Bulb Trade No.	Voltage	Wattage	Light Technology	Rated Life	Overall Lg.	Dia.	Material	Shape No.	Color	Pkg. Qty.		Pkg.
Single Contact—BA15s Small Base (0.59" Dia.)







				Tapered Bulb

				7506	12V AC/12V DC	21 W	Incandescent	Not Rated	2.07"	1"	Glass	S8	Clear	10	1505K238	000000

Wedge-Base Miniature Light Bulbs


Tubular Bulb	Wide 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.	Pkg. Qty.		Pkg.
Wide Base (0.63" Wd.)







				Tubular Bulb

				7440LL	12	21 W	440 lm	Incandescent	Not Rated	Clear	1.85"	0.83"	Glass	T6 1/2	1	1505K241	00000

Screw-In-Base Light Bulbs

Standard

Bulb

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

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

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

		Bulb				Light								Pkg. of 1		Pkg. of 24
	Equivalent Incandescent Bulb Wattage	Shape No.	Material	Dia.	Color	Appearance	Intensity Setting	Tech.	Color Rendering Index	Brightness	Wattage	Rated Life	Overall Lg.		Pkg.		Pkg.
Standard Bulb—Medium (Standard Household) Base (1 1/16" Dia.)







				120V AC

				200 W	A23	Glass	3"	Frosted	Warm (3,000 K)	Not Dimmable	LED	80	2,900 lm	21 W	15,000 hr.	5 5/8"	9236N167	000000	9236N168	0000000


				200 W	A23	Glass	3"	Frosted	Neutral (4,000 K)	Not Dimmable	LED	80	2,900 lm	21 W	15,000 hr.	5 5/8"	9236N169	00000	9236N171	000000
				200 W	A23	Glass	3"	Frosted	Cool (5,000 K)	Not Dimmable	LED	80	2,900 lm	21 W	15,000 hr.	5 5/8"	9236N172	00000	9236N173	000000