Snap On Terminals | McMaster-Carr

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29 Products

Insulation-Piercing Butt Splices

2-Wire Pigtail

3-Wire Pigtail

Snap these splices onto your wire and they’ll pierce the insulation without you having to strip it. Pliers (not included) are recommended to install wire. These splices are rated UL 94 V-2, so they meet flammability standards.

2-Wire Pigtail, 3-Wire Pigtail Connection
For Wire Gauge	For Wire Type	Max. Insulation OD	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Specifications Met	Pkg. Qty.		Pkg.
22-14	Solid, Stranded	0.15"	White	Nylon Plastic	Tin-Plated Brass	600V AC 600V DC	220°	UL Listed, CSA Certified, UL 94 V-2	10	0000000	00000

Submersible Insulation-Piercing Butt Splices

For 2 Wires

For 4 Wires

Pierce the insulation of wire without stripping it to make quick connections that are also sealed to keep out water. These splices have termination buttons on each end, so you can make independent connections on both sides. Since you connect each end independently, they’re often used as a disconnect point on equipment that you’ll be moving around. To install these splices, use a pair of pliers to press down on the button until it clicks.

On 2-wire splices, each button comes in one of three colors that correspond with wire gauge, making it easy to match your wire to the right connector.

4-wire splices have two entry points on both ends for twice as many independent connections as 2-wire splices.

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

2-Wire Inline Wire Connection
For Wire Gauge	For Wire Type	Max. Insulation OD (For Wire Gauge)	Length	Color	Insulation	Insulation Material	Terminal Material	Maximum Voltage	Maximum Temperature, °F	Environmental Rating	Specifications Met		Each
18-16	Solid, Stranded	0.13" (18-16)	1.89"	Red	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP08	UL Listed	0000000	00000
16-14 × 18-16	Solid, Stranded	0.13" (16-14), 0.17" (18-16)	1.89"	Blue and Red	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP08	UL Listed	0000000	0000
14-12 × 18-16	Solid, Stranded	0.13" (14-12), 0.17" (18-16)	1.89"	Yellow and Red	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP08	UL Listed	0000000	0000
14-12 × 16-14	Solid, Stranded	0.15" (14-12), 0.17" (16-14)	1.89"	Yellow and Blue	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP08	UL Listed	0000000	0000
14-12	Solid, Stranded	0.17" (14-12)	1.89"	Yellow	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP08	UL Listed	0000000	0000
4-Wire Inline Wire Connection
22-20	Solid, Stranded	0.11" (22-20)	1.43"	Blue	Fully Insulated	Polycarbonate Plastic	Bronze	600V AC 600V DC	220°	IP05, IP07, IP08	UL Listed	0000000	0000

Moisture-Resistant Insulation-Piercing Butt Splices

Connect wire without stripping—these splices pierce the insulation for quick installation. The pigtail connections have a gel seal to protect the connection from humidity, water, and dirt.

Pliers (sold separately) are recommended to install wire.

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

2-Wire Pigtail Connection

With 2-Wire Pigtail Connection

2-Wire Pigtail

Splices											Pliers
For Wire Gauge	For Wire Type	Max. Insulation OD	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Pkg. Qty.		Pkg.		Each
26-22	Solid	0.06"	Clear, Yellow	Polycarbonate Plastic	Tin-Plated Copper	30V AC	285°	25	0000000	000000	0000000	000000
26-19	Solid	0.08"	Clear, Yellow	Polypropylene Plastic	Tin-Plated Copper	30V AC	285°	50	0000000	00000	0000000	00000

2-Wire Pigtail, 3-Wire Pigtail Connection

With 2-Wire and 3-Wire Pigtail Connections

2-Wire Pigtail

3-Wire Pigtail

Splices											Pliers
For Wire Gauge	For Wire Type	Max. Insulation OD	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Pkg. Qty.		Pkg.		Each
26-19	Solid	0.06"	Clear, Red	Polycarbonate Plastic	Tin-Plated Copper	30V AC	285°	25	0000000	00000	0000000	000000
26-19	Solid	0.08"	Clear, Red	Polypropylene Plastic	Tin-Plated Copper	30V AC	285°	100	0000000	00000	0000000	00000
22-14	Solid, Stranded	0.15"	Blue, White	Nylon Plastic	Tin-Plated Brass	600V AC	220°	10	0000000	00000	000000	00000

Insulation-Piercing Crimp-On Wire Splicing Connectors

No wire stripping is required—these connectors pierce the insulation.

Gel-filled connectors protect your connection from corrosion, humidity, water, and dirt.

Crimper (sold separately) is required for wire installation.

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

For Wire Gauge	Min. Wire Combination	Max. Wire Combination	For Wire Type	Insulation Material	Terminal Material	Max. Voltage	Max. Current	Features	Pkg. Qty.		Pkg.
24-16	Four 24-ga. Wires	Three 16-ga. Wires	Solid, Stranded	Polyolefin Plastic	Tin-Plated Bronze	50V DC	175 mA	__	100	000000	00000
24-16	Four 24-ga. Wires	Three 16-ga. Wires	Solid, Stranded	Polyolefin Plastic	Tin-Plated Bronze	50V DC	175 mA	Gel Filled	100	000000	00000

Crimper

000000

Each

00000

Tap-to-Connector Insulation-Piercing Wire Taps and Plugs

Snap Plug

Parallel Tap

Tap a wire or add a finished terminal to the end of a wire. The parallel taps quickly connect to your wire without stripping the wire first. Squeeze the tap with standard pliers and the U-shaped contact pierces the insulation and grips the wire. Insert a snap plug into the parallel tap. Parallel tap and snap plug are sold separately.

Snap Plug
For Wire Gauge	For Wire Type	Color	Gender	Dia.	Insulation	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Pkg. Qty.		Pkg.
16-14	Solid, Stranded	Blue	Male	0.16"	Barrel Insulated	Nylon Plastic	Tin-Plated Copper	Not Rated	220°	10	000000	00000
Parallel Tap with Inline Wire Connection
18-14	Solid, Stranded	Black	__	__	Fully Insulated	Polypropylene Plastic	Tin-Plated Copper	32V AC	190°	10	000000	00000

Insulation-Piercing Wire Taps

Tap/Main

2-Wire Pigtail

Inline

Double Run

Connect a tap wire to a main wire without stripping—these wire taps penetrate insulation. To install, squeeze the tap with standard pliers; a built-in U-shaped metal contact penetrates the insulation and grips the wire.

UL 94 V-2 or V-0 rated taps meet flammability standards.

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

For Wire Gauge
Stranded	Solid	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Specifications Met	Pkg. Qty.		Pkg.
Tap/Main Wire Connection
22-16	22-16	Red	Polypropylene Plastic	Tin-Plated Brass	600V AC	220°	UL Listed, CSA Certified, UL 94 V-2	25	0000000	000000
12-10	12-10	Brown	Polypropylene Plastic	Tin-Plated Brass	600V AC	220°	UL Listed, CSA Certified, UL 94 V-2	25	0000000	00000
2-Wire Pigtail, Inline, Tap/Main Wire Connection
22-18	18	Red	Polypropylene Plastic	Tin-Plated Brass	600V AC 600V DC	220°	UL Listed, UL 94 V-0	50	0000000	00000
18-14	16	Blue	Polypropylene Plastic	Tin-Plated Brass	600V AC 600V DC	220°	UL Listed, UL 94 V-0	50	0000000	00000
12-10	__	Yellow	Polypropylene Plastic	Tin-Plated Brass	600V AC 600V DC	220°	UL Listed, UL 94 V-0	50	0000000	00000
2-Wire Pigtail, Inline, Tap/Main, Double Run Wire Connection
18-14	18-14	Red	Polypropylene Plastic	Tin-Plated Brass	32V AC 32V DC	190°	__	25	0000000	0000
18-14	18-14	White	Polypropylene Plastic	Tin-Plated Brass	32V AC 32V DC	190°	__	25	0000000	0000
12-10	12	Yellow	Polypropylene Plastic	Tin-Plated Brass	600V AC 600V DC	190°	UL Listed	25	0000000	00000

Moisture-Resistant Insulation-Piercing Wire Taps

Tap/Main

Filled with gel, these taps seal out moisture. Use them to connect a tap wire to a main wire without stripping—they penetrate insulation. To install, squeeze the tap with standard pliers; a built-in U-shaped metal contact penetrates the insulation and grips the wire.

UL 94 V-2 rated taps meet flammability standards.

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

For Wire Gauge
Stranded	Solid	For Number of Wires	Max. Insulation OD	Color	Insulation Material	Terminal Material	Max. Voltage	Max. Temperature, °F	Specifications Met	Pkg. Qty.		Pkg.
Tap/Main Wire Connection
__	26-19	2	0.08"	Blue and Clear	Polypropylene Plastic	Tin-Plated Copper	30V AC	285°	__	50	0000000	000000
18-14	18-16	__	__	Blue	Polypropylene Plastic	Tin-Plated Brass	600V AC	190°	UL Listed, CSA Certified, UL 94 V-2	10	0000000	00000