Wire Connectors | McMaster-Carr

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Quick-Disconnect Terminal

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Telephone to Wall Jack

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C-UL Recognized Component

TUV Rheinland Certified

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Electrical Connection

1" Circular Connector

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EAR99

DFARS Specialty Metals

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8,412 Products

Electrical

Wire Splices, Connectors, and Taps

Join wire and protect the connection

368 products

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

3 products

Terminals, Ferrules, and Lugs

Attach to the end of wire to connect circuits in control panels, motors, and machinery

1,269 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

1,073 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

673 products

Electrical Receptacles

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

1,008 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

699 products

Electrical Cords

Connect equipment and devices to a power supply

849 products

Terminal and Splice Kits

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

17 products

Electrical Connector Contacts

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

26 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

292 products

Patch Panels

Expand and reconfigure a data network when space inside your enclosure is limited

1 product

Electrical Connector Holding Tools

Hold electrical connectors in place to safely join wires

1 product

Terminal Adapters

Convert wire terminals from one connection type or gender to another

7 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

31 products

Binding Posts

Test circuits before making permanent connections

12 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

47 products

Electrical Connector Caps

Protect data connectors when not in use

78 products

Electrical Connector Seals

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

5 products

Slip Rings

Maintain an electrical link between a moving part and a stationary part

4 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

2 products

Circuit Board Terminals

Connect wire to circuit boards

9 products

Distribution Posts

Send power from one source to several devices in a circuit in less space than a distribution block

4 products

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

32 products

Electrical Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Wall Plates

Cover switches and outlets for a finished look or to close them off when not in use

34 products

Electrical Connector Clips

Attach to data connectors to lock them in place, repair them, or color code them

4 products

Jumper Cables

Jump-start a dead battery

12 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

1,189 products

Cable Entry Panels

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

120 products

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

21 products

Interference Suppressing Clips

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

64 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

5 products

Telephone Wiring Blocks

Keep telephone cable organized and accessible

1 product

Grounding Lugs

Create a common grounding path for internal components and circuits, as well as the enclosure body

1 product

Battery Terminals

Connect cable to battery posts to power vehicles and machines

131 products

Battery Terminal Adapters

Convert one battery terminal style to another

6 products

Battery Terminal Fasteners

Replace bolts in battery terminals

3 products

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

2 products

Light Switch/Receptacles

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

2 products

Fastening and Joining

Welding Lugs

Screw, hammer, or crimp on to secure welding cable connections

13 products

Welding Lug Covers

Install over welding lugs to prevent accidental contact with other connections

1 product

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

2 products

Communication

Telephone Connectors

Replace the plug on your phone cord, or extend your line by connecting cords together

12 products

Telephone Cords

Connect telephones to data outlets

9 products

Telephone Splitters

Connect multiple phone lines to a single telephone jack

4 products

Measuring and Inspecting

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Material Handling

Vacuum Lifters

Grip and move objects with air- or electric-powered suction

13 products

Building and Machinery Hardware

Grommets

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

68 products