Splice Connectors | McMaster-Carr

	For Wire Gauge For Wire Gauge

28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12-14
14-16
16-18
22-20
1/0
2/0
3/0
4/0
250 MCM
300 MCM
350 MCM
400 MCM
450 MCM
500 MCM
600 MCM
700 MCM
750 MCM
800 MCM
900 MCM
1000 MCM

	Splice Type Splice Type


Butt	Wire Connector

Multi-Way	Wire Tap

Split Bolt

	Wire Connection Type Wire Connection Type


Crimp On	Lever-Clamp Terminals

Screw-Clamp Terminals	Solder

Snap On	Spring-Clamp Terminals

Compression	Twist On

	Type Type


Splice	Terminal

	Color Color

	For Number of Wires For Number of Wires

	Insulation Insulation


Fully Insulated	Noninsulated

Barrel Insulated

	Maximum Voltage Maximum Voltage

	Insulation Material Insulation Material

Plastic

Rubber

Porcelain

Thermoplastic Rubber Blend

Polypropylene Plastic/Rubber
Blend

	Terminal Material Terminal Material

	Specifications Met Specifications Met

	For Wire Type For Wire Type

Stranded

Solid

Weld Wire

	Maximum Temperature Maximum Temperature

	Length Length

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

DFARS Specialty Metals
COTS-Exempt

	Terminal Finish Terminal Finish

	For Common Wire Combinations For Common Wire Combinations

Five 22-ga. Wires to One
12-ga. Wire

Four 14-ga. Wires to One
6-ga. Wire with One 8-ga.
Wire

Four 14-ga. Wires to Two
6-ga. Wires

Four 16-ga. Wires with
One 18-ga. Wire

Four 18-ga. Wires to
Three 10-ga. Wires

One 8-ga. Wire

One 12-ga. Wire with One
16-ga. Wire

One 14-ga. Wire with One
16-ga. Wire

One 14-ga. Wire with One
20-ga. Wire to Three 14-
ga. Wires with Two 18-ga.
Wires

One 16-ga. Wire with One
18-ga. Wire

One 16-ga. Wire with
Three 18-ga. Wires to
Two 10-ga. Wires with
One 12-ga. Wire

One 18-ga. Wire with One
20-ga. Wire to Four 16-ga.
Wires with One 20-ga.
Wire

Three 12-ga. Wires to
Two 6-ga. Wires

Three 12-ga. Wires to
Two 6-ga. Wires with One
12-ga. Wire

Three 14-ga. Wires to
Two 8-ga. Wires

Three 14-ga. Wires with
One 22-ga. Wire to One 8-
ga. Wire

Three 20-ga. Wires to
Three 12-ga. Wires

Three 20-ga. Wires with
One 22-ga. Wire

Three 22-ga. Wires to
Three 10-ga. Wires

Two 14-ga. Wires to Five
12-ga. Wires

Two 14-ga. Wires to Two
10-ga. Wires with Two 12-
ga. Wires

Two 14-ga. Wires to Two
10-ga. Wires with Two 14-
ga. Wires

Two 18-ga. Wires to Four
10-ga. Wires

Two 18-ga. Wires to Four
14-ga. Wires with One 18-
ga. Wire

Two 18-ga. Wires to Four
16-ga. Wires

Two 18-ga. Wires to
Three 10-ga. Wires

Two 18-ga. Wires to
Three 12-ga. Wires

Two 18-ga. Wires to Two
8-ga. Wires

Two 18-ga. Wires to Two
10-ga. Wires with One 12-
ga. Wire

Two 18-ga. Wires to Two
16-ga. Wires with One 18-
ga. Wire

Two 18-ga. Wires to Two
16-ga. Wires with Two 18-
ga. Wires

Two 20-ga. Wires to
Three 14-ga. Wires

Two 22-ga. Wires to
Three 16-ga. Wires

Two 22-ga. Wires to Two
12-ga. Wires

Two 22-ga. Wires to Two
12-ga. Wires with One 14-
ga. Wire

Two 22-ga. Wires to Two
16-ga. Wires

Two 24-ga. Wires to
Three 16-ga. Wires

	For Wire Material For Wire Material

Copper

Aluminum

	Wire Splicing Connector Style Wire Splicing Connector Style


Straight	Winged

	Wire Connection Style Wire Connection Style

	Inlet Location Inlet Location

Front

Back

Side

	Shrink Temperature Shrink Temperature

	Number of Pieces Number of Pieces

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354 Products

Crimp-On Butt Splices

Insulated Crimp-On Butt Splices

A plastic cover fully insulates these splices.

Noninsulated Crimp-On Butt Splices

These splices can withstand higher temperatures than insulated splices.

Insulated Double-Crimp-On Butt Splices

Crimp the barrel twice on each end for an extra-tight grip in high-vibration applications. A plastic cover fully insulates these splices.

Insulated Crimp-On Butt Splices with Inspection Window

Visually confirm your connection through the inspection window in the insulation of these splices.

Heat-Shrink Crimp-On Butt Splices

When heat is applied, adhesive-lined insulation shrinks and bonds to wires, creating a moisture- and corrosion-resistant seal.

Solder-Loaded Heat-Shrink Crimp-On Butt Splices

The most secure, electrically conductive, and environmentally sealed connection we offer, these splices have enclosed solder that melts when heat is applied.

Heat-Shrink Crimp-On Butt
Splices with Inspection Window

Visually confirm your connection through the inspection window.

High-Temperature Crimp-On Butt Splices

Able to withstand temperatures up to 900°F, these splices are suitable for use in high-heat applications such as ovens, motors, and light fixtures.

Sealed Moisture-Resistant Crimp-On Butt Splices

These splices are filled with a sealant that creates a barrier to completely keep out moisture when splices are crimped.

Moisture-Resistant Crimp-On Butt Splices

Filled with grease, these splices resist moisture and corrosion.

Heat-Shrink Reducing Crimp-On Butt Splices

When heat is applied, adhesive-lined insulation shrinks and bonds to the wires, creating a watertight seal.

Noninsulated Reducing Crimp-On Butt Splices

These splices can withstand higher temperatures than insulated splices.

Solder-Loaded Heat-Shrink
Reducing Crimp-On Butt Splices

Create a water- and corrosion-resistant seal while connecting two different sizes of wire.

Insulated Reducing Crimp-On Butt Splices

A plastic cover fully insulates these splices.

Insulation Displacement Butt Splices

Connect wire without stripping—these splices pierce insulation.

Submersible Insulation Displacement Butt Splices

Pierce the insulation of wire without stripping it to make quick connections that are also sealed to keep out water.

No-Crimp Butt Splices

Solder-Loaded Heat-Shrink No-Crimp Butt Splices

With a ring of solder on the inside, these heat-shrink splices create secure, water-resistant connections between wires without the need for a crimping tool.

Push-On No-Crimp Butt Splices

Push stripped wire into each end of these splices to make a connection.

Twist-On No-Crimp Butt Splices

Insert wires and twist on the threaded end caps. The caps lock wires into place, making these splices a good choice for high-vibration applications.

Weather-Resistant Twist-On No-Crimp Butt Splices

Sealed threads make these splices weather resistant.

Compression Butt Splices

For use with a compression tool, these splices are color-coded to match compression dies.

Double-Compression Butt Splices

Compress the barrel twice on each end for an extra-tight grip in high-vibration applications.

Screw-Down Butt Splices

Noninsulated Screw-Down Butt Splices

Tighten the screws to connect wires.

Insulated Screw-Down Butt Splices

A plastic cover fully insulates these splices and it's clear so you can visually confirm the connection.

Harsh-Environment Screw-Down Butt Splices

Join wires in the dirtiest, wet, and harsh environments. These splices meet one of the toughest IP ratings—IP68.

Underground Heat-Shrink Screw-Down Butt Splices

Make watertight connections for underground applications.

Wire Splicing Connectors

Clamp-On Wire Splicing Connectors

Press down on the clamp to connect wires and pull it up to disconnect.

Crimp-On Wire Splicing Connectors

A plastic cover fully insulates these splices and is clear so you can visually confirm the connection.

Noninsulated Crimp-On Wire Splicing Connectors

Twist stripped wires together, insert them into the connector, and then crimp for a dependable connection.

Insulation Displacement Crimp-On
Wire Splicing Connectors

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

Push-On Wire Splicing Connectors

Push stripped wires into connectors for a reliable connection that's faster to install than twisting or crimping.

Twist-On Wire Splicing Connectors

Make a quick, secure wire connection without crimping.

Watertight Twist-On Wire Splicing Connectors

Filled with silicone, these connectors seal out moisture and prevent corrosion.

Ultra-High Temperature Twist-On
Wire Splicing Connectors

Made of porcelain, these connectors can withstand temperatures up to 1200°F.

High Temperature Twist-On Wire Splicing Connectors

Rated to 300° F, these connectors are an excellent choice for use in high-temperature applications such as HID lighting and electric heat.

Space-Saver Twist-On Wire Splicing Connectors

Suitable for use in tight spaces, these connectors have a narrow profile that takes up less space than standard wire splicing connectors.

Easy-Grip Twist-On Wire Splicing Connectors

Grip the wings on these connectors to increase leverage when tightening.

Padded Easy-Grip Twist-On Wire Splicing Connectors

Soft molding over the wings provides a comfortable grip.

Underground Easy-Grip Twist-On
Wire Splicing Connectors

Suitable for use underground, these connectors consist of a twist-on wire connector and an abrasion- and moisture-resistant insulator tube.

Wide-Range Easy-Grip Twist-On
Wire Splicing Connectors

Large enough to be used with a wide range of wire sizes, these connectors can still fit into cramped outlet boxes.

Multi-Way Splices and Taps

Multi-Way Taps/Splices

Tap and splice multiple wires together at the same time.

Sealed Multi-Way Taps/Splices

Tap and splice multiple wires in temporarily wet environments and up to six feet underground.

Multi-Way Heat-Shrink Crimp-On Butt Splices

Connect one wire to two wires of the same size. When heat is applied, adhesive-lined insulation shrinks and bonds to the wires, creating a moisture- and corrosion-resistant seal.

3- and 4-Way Splices

Use a single splice to connect more than two wires.

Heat-Shrink 3-Way Splices

When heat is applied, adhesive-lined insulation shrinks and bonds to the wires, creating a moisture- and corrosion-resistant seal.

Wire Taps

Tap-to-Wire Insulation-Piercing Wire Taps

Connect a tap wire to a main wire without stripping—these wire taps penetrate insulation.

Moisture-Resistant Tap-to-Wire
Insulation-Piercing Wire Taps

Filled with gel, these wire taps seal out moisture.

Flame-Retardant Tap-to-Wire
Insulation-Piercing Wire Taps

These wire taps meet UL 94 V-2 for flame retardance.

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

Tap a main wire or add a finished terminal to the end of a wire.

Quick-Disconnect T-Taps

Taps connect to wires with male quick-disconnect terminals.

Screw-Down Split-Bolt Splices

Splice large size wires without special tools—insert your wires and tighten the hex nut to make a connection.

Terminal and Splice Assortments

Use the included crimping tool to install a variety of terminals and butt splices.

Wire Splice and Tap Assortments

No crimping or wire stripping needed—this assortment includes twist-on wire connectors and insulation-piercing wire taps.