Lamp Socket Adapters | McMaster-Carr

	For Bulb Base Type For Bulb Base Type


Screw In	Bi-Pin

Twist and Lock	Four Pin

Four-Pin Wedge	Recessed Double Contact

Single Pin	Two-Pin Wedge

	Mount Type Mount Type

	Light Technology Light Technology

	Electrical Connection Type Electrical Connection Type


Plug	Hardwire

	Material Material

Plastic

Porcelain

Brass

	For Bulb Shape Number For Bulb Shape Number

T12

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	For Socket Base Size For Socket Base Size

Medium (Standard
Household)

Candelabra

	Color Color

	Brown
	White
	Black

	Wire Connection Type Wire Connection Type

Spring-Clamp Terminals

Screw Terminals

Wire Leads

Push On

	For Wire Construction For Wire Construction

Solid

Stranded

	Switch Type Switch Type

Without Switch

Pull Chain

Knob

	For Socket Base Diameter For Socket Base Diameter

1/2"

1 1/16"

	Height Height

	Width Width

	Specifications Met Specifications Met

CSA

	For Bulb Shape For Bulb Shape


Tubular	Twin Tube

Quad Tube	Triple U- Shaped

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Maximum Bulb Wattage For Maximum Bulb Wattage

	Voltage Voltage

	For Bulb Base Number For Bulb Base Number

	For Ballast Start Type For Ballast Start Type

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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35 Products

Plug-In Lamp Sockets for Screw-In Light Bulbs

Turn an overhead outlet or an extension cord into a temporary light. These sockets have a two-prong plug for a quick connection.

For Screw-In Base
Size	Dia.	Switch Type	Material	Color	Specifications Met		Each
For LED, CFL, Halogen, and Incandescent Bulbs
Medium (Standard Household)	1 1/16"	Without Switch	Plastic	Brown	UL Listed	00000000	00000

Lamp Sockets for Screw-In Light Bulbs

Without Switch

With Pull Chain

With Knob

Hardwire these sockets to a power source.

For technical drawings and 3-D models, click on a part number.

	For Screw-In Base		Pipe
Switch Type	Size	Dia.	Thread Type	Size	Gender	Color	Wire Connection Type	No. of Wire Leads	Specifications Met		Each
For LED, CFL, Halogen, and Incandescent Bulbs
Plastic
Without Switch	Medium (Standard Household)	1 1/16"	NPSM	1/8	Female	Black	Wire Leads	2	UL Listed	00000000	00000
Brass
Without Switch	Medium (Standard Household)	1 1/16"	NPSM	1/8	Female	__	Screw Terminals	__	UL Listed	00000000	0000
Pull Chain	Medium (Standard Household)	1 1/16"	NPSM	1/8	Female	__	Screw Terminals	__	UL Listed	00000000	0000
Knob	Medium (Standard Household)	1 1/16"	NPSM	1/8	Female	__	Screw Terminals	__	UL Listed	00000000	0000

Sockets for Tubular Light Bulbs

Replace worn sockets in light fixtures. These sockets work with tubular fluorescent bulbs, and some also work with LED bulbs.

Sockets for rapid and preheat ballasts are also known as non-shunted.

Sockets for instant-start ballasts are also known as shunted.

For T5 Bulbs—Fluorescent and LED

For Bi-Pin T5 Bulbs

	For Max.								For Wire
For Ballast Start Type	Bulb Wattage	Voltage	Mount Type	Ht.	Wd.	Dp.	Material	Color	Gauge	Construction	Specifications Met		Pair
For Bi-Pin Base
Rapid	120W	600V AC	Slide On	1 1/8"	3/4"	1/2"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	00000

For T8 and T12 Bulbs—Fluorescent

For Bi-Pin T8 and T12 Bulbs

For Single-Pin T8 and T12 Bulbs

	For Max.								For Wire
For Ballast Start Type	Bulb Wattage	Voltage	Mount Type	Ht.	Wd.	Dp.	Material	Color	Gauge	Construction	Specifications Met		Pair
For Bi-Pin Base
Instant	660W	600V AC	Slide On	1 3/4"	1 1/4"	3/4"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	000000
For Single Pin Base
Instant	660W	600V AC	Slide On	1 7/8"	1 3/8"	1 7/8"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	0000

For T8 and T12 Bulbs—Fluorescent and LED

For Bi-Pin T8 and T12 Bulbs

For Recessed Double-Contact T8 and T12 Bulbs

	For Max.								For Wire
For Ballast Start Type	Bulb Wattage	Voltage	Mount Type	Ht.	Wd.	Dp.	Material	Color	Gauge	Construction	Specifications Met		Pair
For Bi-Pin Base
Rapid, Preheat	660W	600V AC	Slide On	1 3/4"	1 1/4"	3/4"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	00000
Rapid, Preheat	660W	600V AC	Slide On	2 1/8"	1 1/4"	3/4"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	0000
For Recessed Double-Contact Base
Rapid, Preheat	660W	600V AC	Slide On	2 3/8"	1 1/2"	2"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	00000

Tight-Hold Sockets for Tubular Light Bulbs

Lock bulbs in place to prevent vibration from shaking them loose. They replace worn sockets in light fixtures. These sockets work with tubular fluorescent or LED bulbs.

Sockets for rapid and preheat ballasts are also known as non-shunted.

Sockets for instant-start ballasts are also known as shunted.

	For Max.								For Wire
For Ballast Start Type	Bulb Wattage	Voltage	Mount Type	Ht.	Wd.	Dp.	Material	Color	Gauge	Construction	Specifications Met		Pair
For T8 Bulbs—Fluorescent
For Bi-Pin Base
Rapid, Programmed	600W	600V AC	Slide On	1 3/8"	1 1/8"	3/4"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	00000
For T8 Bulbs—Fluorescent and LED
For Bi-Pin Base
Instant	660W	600V AC	Slide On	1 3/8"	1 1/8"	3/4"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	00000
For T8 and T12 Bulbs—Fluorescent and LED
For Bi-Pin Base
Rapid, Preheat	660W	600V AC	Slide On	1 3/8"	1"	3/8"	Plastic	White	18	Solid, Stranded	CSA Certified, UL Listed	0000000	0000

Sockets for Plug-In Compact Light Bulbs

Replace worn sockets in light fixtures. These sockets work with plug-in compact fluorescent and LED bulbs.

Push snap-on sockets onto fixture panels that are 0.023” to 0.039” thick.

Fastener-mount sockets provide more holding power than snap-on sockets so they withstand vibration better.

		For Max.								For Wire		Mount. Holes
	For Bulb Base No.	Bulb Wattage	Voltage	Mount Type	Ht.	Wd.	Dp.	Material	Color	Gauge	Construction	No. of	Dia.	Specifications Met		Each
For Twin Tube Bulbs—CFL and LED
For Four Pin Base
A	2G11	75W	600V AC	Fastener Mount	1"	1 7/8"	1 1/2"	Plastic	White	18	Solid	2	3/8"	CSA Certified, UL Listed	0000000	00000
For Two-Pin Wedge Base
B	G23	75W	600V AC	Snap On	1 3/8"	1 1/2"	1 3/8"	Plastic	White	18	Solid, Stranded	__	__	CSA Certified, UL Listed	0000000	0000
B	GX23	75W	600V AC	Snap On	1 3/8"	1 1/2"	1 3/8"	Plastic	White	18	Solid, Stranded	__	__	CSA Certified, UL Listed	0000000	0000
C	G23/G23-2	75W	600V AC	Fastener Mount	1 1/4"	1 3/8"	1 1/4"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	0000
C	GX23/GX23-2	75W	600V AC	Fastener Mount	1 1/4"	1 3/8"	1 1/4"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	0000
D	G23/G23-2	75W	600V AC	Snap On	1 1/8"	1 1/2"	1 3/8"	Plastic	White	18	Solid, Stranded	__	__	CSA Certified, UL Listed	0000000	0000
D	GX23/GX23-2	75W	600V AC	Snap On	1 1/8"	1 1/2"	1 3/8"	Plastic	White	18	Solid, Stranded	__	__	CSA Certified, UL Listed	0000000	0000
For Quad Tube Bulbs—CFL and LED
For Two-Pin Wedge Base
E	G24d-3	75W	600V AC	Fastener Mount	1 3/8"	1 1/2"	1 1/2"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	00000
For Quad Tube and Triple U-Shaped Bulbs—CFL and LED
For Four-Pin Wedge Base
F	G24q-3/GX24q-3	75W	600V AC	Fastener Mount	1 3/8"	1 1/2"	1 1/2"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	00000
F	GX24q-2	75W	600V AC	Fastener Mount	1 3/8"	1 1/2"	1 1/2"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	00000
For Triple U-Shaped Bulbs—CFL and LED
For Four-Pin Wedge Base
F	GX24q-4	75W	600V AC	Fastener Mount	1 3/8"	1 1/2"	1 1/2"	Plastic	White	18	Solid, Stranded	4	5/32"	CSA Certified, UL Listed	0000000	00000

Light Socket Extenders

Use these extenders when bulbs are too short to fit into deep or recessed fixtures.

For technical drawings and 3-D models, click on a part number.

For Bulb Base			For Socket Base
Type	Size	Dia.	Type	Size	Dia.	Extension Lg.	Material	Specifications Met		Each
For Incandescent, Halogen, CFL, and LED Bulbs
Screw In	Medium (Standard Household)	1 1/16"	Screw In	Medium (Standard Household)	1 1/16"	1 1/4"	Porcelain	UL Listed	00000000	00000

Twist-and-Lock Socket Adapters for Medium Screw-In Sockets

Convert a fixture that uses medium-base bulbs to accept GU24 bi-pin base bulbs with these adapters.

For technical drawings and 3-D models, click on a part number.

For Bulb Base		For Socket Base
Type	No.	Type	Size	Dia.		Each
For Incandescent, Halogen, CFL, and LED Bulbs
Twist and Lock	GU24	Screw In	Medium (Standard Household)	1 1/16"	000000	00000

Medium Screw-In Socket Adapters for Candelabra Screw-In Sockets

Convert a fixture that uses candelabra-base bulbs to accept medium-base bulbs with these adapters.

For Bulb Base			For Socket Base
Type	Size	Dia.	Type	Size	Dia.		Each
For Incandescent, Halogen, CFL, and LED Bulbs
Screw In	Medium (Standard Household)	1 1/16"	Screw In	Candelabra	1/2"	0000000	00000

Light Socket Locking Clips

For Bi-Pin Base Bulbs

For Single-Pin and
Recessed
Double-Contact Base Bulbs

Stop vibration from shaking tubular fluorescent and LED bulbs loose.

For Bulb
Base Type	Shape	Shape No.	Material	Specifications Met		Each
For Fluorescent and LED Bulbs
Bi-Pin	Tubular	T8, T12	Plastic	CSA Certified, UL Listed	0000000	00000
Single Pin, Recessed Double Contact	Tubular	T12	Plastic	CSA Certified, UL Listed	0000000	0000

Light Bulb Sockets

Install sockets for medium (standard household) screw-in base light bulbs.

Styles A-C mount to outlet boxes.

		Overall									Mounting Holes
Style	Switch Type	Dia.	Lg.	Wd.	Voltage	Max. Wattage per Bulb	Collar Dia.	Housing Material	For Outlet Box Ht.	Mounting Hardware Included	No. of	Dia.	Specifications Met		Each
For LED, CFL, Halogen, and Incandescent Bulbs
A	No Switch	4 1/2"	__	__	120V AC, 208V AC, 240V AC	660W	1 9/16"	Porcelain	3 1/4", 4"	Yes	2	7/32"	UL Listed, CSA Certified	00000000	00000
B	Pull Chain	4 1/2"	__	__	120V AC, 208V AC, 240V AC	250W	1 11/16"	Porcelain	3 1/4", 4"	Yes	2	7/32"	UL Listed, CSA Certified	0000000	00000
C	Pull Chain	4 1/2"	__	__	120V AC	250W	1 5/8"	Porcelain	3 1/4", 4"	Yes	2	7/32"	UL Listed, CSA Certified	0000000	00000
D	No Switch	__	2"	2"	120V AC, 208V AC, 240V AC, 277V AC, 480V AC	660W	1 1/2"	Porcelain	__	No	2	3/16"	UL Listed	00000000	00000

Temporary Light Bulb Sockets

Also known as pigtail holders. Temporarily wire these sockets to provide light during construction. They have a rubber lip that molds around bulbs to form a water-resistant seal.

					Housing
Overall Dia.	Voltage	Screw-In Base Size	Max. Wattage per Bulb	Collar Dia.	Material	Color	Wire Connection Type	Specifications Met		Each
For LED, CFL, Halogen, and Incandescent Bulbs
1 1/2"	120V AC, 208V AC, 240V AC, 277V AC, 480V AC	Medium (Standard Household)	300W	1 5/8"	Ceramic	Yellow	Wire Leads	UL Listed	0000000	000000