McMaster-Carr

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250 MCM
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1000 MCM

	Wire Connection Type Wire Connection Type


Crimp On	Push On

Screw Down	Lever Clamp On

Solder	Twist On

Compression

	Splice Type Splice Type


Butt	Wire Connector

Multi-Way	Wire Tap

Split Bolt

	Color Color

	Insulation Insulation


Fully Insulated	Noninsulated

Barrel Insulated

	For Number of Wires For Number of Wires

	Type Type


Splice	Terminal

	Maximum Voltage Maximum Voltage

	Insulation Material Insulation Material

Plastic

Polypropylene Plastic/Rubber
Blend

Porcelain

Thermoplastic Rubber Blend

	Terminal Material Terminal Material

	For Wire Type For Wire Type

Stranded

Solid

Weld Wire

	Specifications Met Specifications Met

CSA

Mil. Spec.

	Maximum Temperature Maximum Temperature

	Terminal Finish Terminal Finish

	Wire Splicing Connector Style Wire Splicing Connector Style


Straight	Winged

	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 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 16-ga. Wires

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

	Length Length

	Width Width

	Wire Connection Style Wire Connection Style

	For Wire Material For Wire Material

Copper

Aluminum

	Number of Pieces Number of Pieces

	Shrink Temperature Shrink Temperature

	For Minimum Tap Wire Type For Minimum Tap Wire Type

Solid

Stranded

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233 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 Crimp-On Butt
Splices with Inspection Window

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

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

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

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.

Moisture-Resistant
Crimp-On Butt Splices

Filled with grease, these splices resist moisture and corrosion.

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.

Noninsulated Reducing
Crimp-On Butt Splices

These splices can withstand higher temperatures than insulated splices.

Heat-Shrink Reducing
Crimp-On Butt Splices

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

Insulated Reducing
Crimp-On Butt Splices

A plastic cover fully insulates these splices.

No-Crimp Butt Splices

Push-On No-Crimp Butt Splices

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

Weather-Resistant Twist-On
No-Crimp Butt Splices

Sealed threads make these splices weather resistant.

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.

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.

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.

Insulation Displacement Butt Splices

Connect wire without stripping—these splices pierce insulation.

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.

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.

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.

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.

Easy-Grip Twist-On Wire
Splicing Connectors

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

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.

Padded Easy-Grip Twist-On
Wire Splicing Connectors

Soft molding over the wings provides a comfortable grip.

Push-On Wire Splicing Connectors

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

Multi-Way Splices and Taps

Compact Multi-Way Taps/Splices

Able to fit in tight spaces, these splices can be used in cable trays, raceways, wireways, ducts, and motor leads.

Multi-Way Taps/Splices

Tap and splice multiple wires together at the same time.

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.

3- and 4-Way Splices

Use a single splice to connect more than two wires.

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.

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 are UL listed V2 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

Wire Splice and Tap Assortments

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

Terminal and Splice Assortments

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

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	Clear with Red and Blue Dashes
	Gray with Red Stripe
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Crimp-On Butt Splices

Insulated Crimp-On Butt Splices

Noninsulated Crimp-On Butt Splices

Insulated Crimp-On ButtSplices with Inspection Window

Insulated Double-Crimp-OnButt Splices

Solder-Loaded Heat-ShrinkCrimp-On Butt Splices

Heat-Shrink Crimp-On Butt Splices

Heat-Shrink Crimp-On ButtSplices with Inspection Window

High-TemperatureCrimp-On Butt Splices

Moisture-ResistantCrimp-On Butt Splices

Sealed Moisture-ResistantCrimp-On Butt Splices

Noninsulated ReducingCrimp-On Butt Splices

Heat-Shrink ReducingCrimp-On Butt Splices

Insulated ReducingCrimp-On Butt Splices

No-Crimp Butt Splices

Push-On No-Crimp Butt Splices

Weather-Resistant Twist-OnNo-Crimp Butt Splices

Twist-On No-Crimp Butt Splices

Solder-Loaded Heat-ShrinkNo-Crimp Butt Splices

Screw-Down Butt Splices

NoninsulatedScrew-Down Butt Splices

Insulated Screw-Down Butt Splices

Harsh-EnvironmentScrew-Down Butt Splices