Wire Couplings | McMaster-Carr

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9,407 Products

Wire Splices, Connectors, and Taps

Butt Splice

Set Screw Butt Splices

Set Screw Butt Splices

Connect thicker wires than crimp-on butt splices

Crimp-On Butt Splices

Crimp-On Butt Splices

Connect wires end to end to extend a run or repair a line

Compression Butt Splices

Compression Butt Splices

Connect thicker wires than crimp-on butt splices

Tight-Hold Heat-Shrink Butt Splices

Tight-Hold Heat-Shrink Butt Splices

Solder stiffens and secures the wire through the heaviest vibrations and sharpest tugs

Heat-Shrink Crimp-On Butt Splices

Heat-Shrink Crimp-On Butt Splices

Insulation shrinks when heated for a tighter grip than standard butt splices

Underground Heat-Shrink Set Screw Butt Splices

Underground Heat-Shrink Set Screw Butt Splices

Enclosed in durable plastic tubing so you can bury in rocky soil

Watertight Set Screw Butt Splices

Watertight Set Screw Butt Splices

End caps seal off the wire so it stays completely dry and conductive

Reducing Crimp-On Butt Splices

Reducing Crimp-On Butt Splices

Connect two components with different wire sizes

Reducing Compression Butt Splices

Reducing Compression Butt Splices

Connect two components with different wire sizes

Heat-Shrink Reducing Crimp-On Butt Splices

Heat-Shrink Reducing Crimp-On Butt Splices

A step up in strength and strain relief over standard butt splices

Moisture-Resistant Twist-On Butt Splices

Moisture-Resistant Twist-On Butt Splices

Sealed end caps repel moisture to keep wires dry and conductive

Tight-Hold Heat-Shrink Reducing Butt Splices

Tight-Hold Heat-Shrink Reducing Butt Splices

Join two sizes of wire and heat the splice to strengthen the connection with solder

Twist-On Butt Splices

Twist-On Butt Splices

Insert wires and twist on the caps to lock wires in place when vibrated and pulled

Heat-Shrink 2-to-1 Wire Crimp-On Butt Splices

Heat-Shrink 2-to-1 Wire Crimp-On Butt Splices

Splice two wires into one for a tidier setup

Watertight Insulation-Piercing Butt Splices

Watertight Insulation-Piercing Butt Splices

Gel seals off the wire so it stays completely dry and conductive

Quick-Connect Clamp-On Butt Splices

Quick-Connect Clamp-On Butt Splices

Pop onto wire by hand instead of fussing with crimping tools

Tight-Hold Heat-Shrink Butt Splice Assortments

Tight-Hold Heat-Shrink Butt Splice Assortments

Keep multiple sizes on hand and heat the splice to strengthen the connection with solder

Tight-Hold Butt Splices

Tight-Hold Butt Splices

Solder stiffens and strengthens the wire so it won't fray when vibrated

Moisture-Resistant Crimp-On Butt Splices

Moisture-Resistant Crimp-On Butt Splices

Filled with grease to repel moisture and maintain a strong connection

Watertight Reducing Insulation-Piercing Butt Splices

Watertight Reducing Insulation-Piercing Butt Splices

Join two wires of different sizes while keeping the connection dry and conductive

Twist-On Butt Splice Assortments

Twist-On Butt Splice Assortments

Bring multiple sizes to a job and leave the installation tools behind

Quick-Connect Push-On Butt Splices

Quick-Connect Push-On Butt Splices

An economical alternative to quick-connect clamp-on splices

Wire Tap/Connector

Wire Tap/Connectors

Wire Tap/Connectors

Tap or join larger wires than standard wire taps and connectors

Underground Wire Tap/Connectors

Underground Wire Tap/Connectors

Double O-rings and EPDM insulation withstand moisture and stress underground

Split-Bolt Splice

Split-Bolt Splices

Split-Bolt Splices

Tighten a hex nut for a strong hold on large wires

Wire Connector

Quick-Connect Clamp-On Wire Connectors

Quick-Connect Clamp-On Wire Connectors

Flip the clamp down on your wire to save time over crimping

Quick-Connect Push-On Wire Connectors

Quick-Connect Push-On Wire Connectors

Push wire into place to save time over crimping or twisting

Crimp-On Wire Connectors

Crimp-On Wire Connectors

Squeeze onto wires for a stronger grip than standard connectors

Quick-Connect Clamp-On Wire Connector Assortments

Quick-Connect Clamp-On Wire Connector Assortments

Join two, three, or five wires without stopping to crimp connectors

Moisture-Resistant Twist-On Wire Connectors

Moisture-Resistant Twist-On Wire Connectors

Filled with silicone to repel moisture and prevent corrosion

Insulation-Piercing Wire Connectors

Insulation-Piercing Wire Connectors

Bite through insulation to connect wires without stripping them first

Twist-On Wire Connector Assortments

Twist-On Wire Connector Assortments

Bring a range of sizes to the job and twist them onto wires without crimping tools

Twist-On Wire Connectors

Twist-On Wire Connectors

Twist onto wires without crimping for fast and easy installation

Moisture-Resistant Insulation-Piercing Wire Connectors

Moisture-Resistant Insulation-Piercing Wire Connectors

Filled with gel to repel moisture and prevent corrosion

Set Screw Wire Connectors

Set Screw Wire Connectors

Tighten the set screw into the metal barrel for a firm grip on the wire

Tight-Hold Heat-Shrink Wire Connectors

Tight-Hold Heat-Shrink Wire Connectors

Solder stiffens and secures the wire through the heaviest vibrations and sharpest tugs

Heat-Shrink Crimp-On Wire Connectors

Heat-Shrink Crimp-On Wire Connectors

Shrink when heated for a stronger grip than standard crimp-on connectors

Quick-Connect Push-On Wire Connector Assortments

Quick-Connect Push-On Wire Connector Assortments

Join two to eight wires without stopping to crimp connectors

Twist-On Wire Connector and Insulation-Piercing Wire Tap Assortments

Twist-On Wire Connector and Insulation-Piercing Wire Tap Assortments

Twist connectors onto wire ends or pierce insulation with a tap to create a new circuit

Underground Twist-On Wire Connectors

Underground Twist-On Wire Connectors

Protect underground connections from moisture, corrosion, and stress

Wire Tap

Insulation-Piercing Wire Taps

Insulation-Piercing Wire Taps

Bite into an installed wire to power additional lines

Twist-On Insulation-Piercing Wire Taps

Twist-On Insulation-Piercing Wire Taps

Twist the cap for a tighter grip on the wire than other taps

Easy-Insert Lay-In Wire Taps

Easy-Insert Lay-In Wire Taps

Lay wire into your tap on the first try instead of poking and threading

Insulation-Piercing Wire Taps for Snap-Plug Terminals

Insulation-Piercing Wire Taps for Snap-Plug Terminals

Pop snap plugs in and out to restore or break connections without rewiring

Insulation-Piercing Wire Taps for Quick-Disconnect Terminals

Insulation-Piercing Wire Taps for Quick-Disconnect Terminals

Pop quick-disconnect terminals in and out to restore or break connections without rewiring

Moisture-Resistant Insulation-Piercing Wire Taps

Moisture-Resistant Insulation-Piercing Wire Taps

Filled with gel to repel moisture and prevent corrosion

Twist-On Insulation-Piercing Wire Tap Assortments

Twist-On Insulation-Piercing Wire Tap Assortments

Keep a variety of sizes on hand to tap any wiring in your facility

Multi-Direction Splice

Multi-Direction Crimp-On Splices

Multi-Direction Crimp-On Splices

Streamline wiring from multiple components into a single circuit

Multi-Direction Heat-Shrink Crimp-On Splices

Multi-Direction Heat-Shrink Crimp-On Splices

A step up in strength and strain relief over standard multi-direction splices

Other Products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Wire Rope Compression Sleeves

Wire Rope Compression Sleeves

Install a permanent loop at wire rope ends using a compression tool

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

Swivels

Rotate loads to keep rope and chain from twisting and knotting

Electrical Connector Contacts

Electrical Connector Contacts

Crimp wire into pins and sleeves to create custom Molex or Amphenol connectors

Electrical Receptacles

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

Shackles

Lift, pull, and anchor heavy loads while keeping them secure with a pin

Conduit Bumpers

Conduit Bumpers

Shield sections of flexible conduit from impact to prevent wear

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Cable Entry Panels

Cable Entry Panels

Pass multiple cords into an enclosure while sealing out moisture, dust, and other contaminants

Electrical Connector Caps

Electrical Connector Caps

Protect data connectors when not in use

Terminal and Splice Kits

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

Conduit Box Connectors

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

Chain Rings

Join chains and add connectors for binding, towing, and lifting

Conduit Locknuts

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

Quick Links

Join rope, cable, and chain to secure loads

Conduit Bodies

Access wiring to pull, splice, or redirect it

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

Interference Suppressing Clips

Interference Suppressing Clips

Shield cable from EMI and RFI that can distort signals; also known as ferrite beads

Chain Barrier Links

Chain Barrier Links

Split in half and snap back together to securely connect lengths of chain

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

Conduit

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Conduit Bushings

Conduit Bushings

Guard wiring from sharp edges at the ends of conduit

Conduit Knockout Reducers

Conduit Knockout Reducers

Shrink knockout sizes in electrical boxes to connect smaller conduit

Weatherheads

Bring power into buildings and protect the entry point from rain and snow

Conduit Support Clips

Conduit Support Clips

Mount flexible plastic conduit to walls and machines

Electrical Connector Boots

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

Light Switch/Receptacles

Light Switch/Receptacles

Combine a switch and receptacle into a single outlet box for a small footprint

Electrical Connector Seals

Electrical Connector Seals

Add to the front or back of connectors to block out dust, debris, and weather

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Heat-Shrink Tubing

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

Wire Splice Covers

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)