Electrical Connectors | McMaster-Carr

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Electrically Insulating

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DFARS Specialty Metals

11,191 Products

Most Likely Products

Terminals, Ferrules, and Lugs

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

1,267 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

378 products

All Results

Electrical Power, Networking, and Controlling

Terminals, Ferrules, and Lugs

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

1,267 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

1,544 products

Molex Connectors

Plugs, sockets, and housings for making Molex connections

180 products

Mil. Spec. Connectors

Meet strict military standards or are compatible with Mil. Spec. connectors

167 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

206 products

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

333 products

AMP Connectors

Build-your-own and ready-to-use AMP connectors

80 products

Amphenol Connectors

Attach wires to a circuit board

32 products

Mini Connectors

Plugs, sockets, and receptacles send power and control signals to equipment and automated systems

78 products

D-Sub Connectors

Plugs, sockets, receptacles, and adapters for connecting computers, monitors, and printers

145 products

Solenoid Valve Connectors

Sockets and receptacles to connect solenoid components, such as valves and motors

17 products

RJ45 Connectors

Plugs, sockets, and receptacles to make Ethernet connections

85 products

DisplayPort Connectors

Connect two DisplayPort cords of the same gender and connection type

1 product

Coaxial Connectors

Plugs, sockets, receptacles, and adapters to make coaxial connections

59 products

Ecomate Connectors

Connect machine tools, robots, and other vibrating equipment

14 products

Mil. Spec. Connector Caps

Protect Mil. Spec. connectors when they're not in use

12 products

Sure Seal Connectors

A PVC housing keeps out liquids and dust and resists chemicals

6 products

DMX Connectors

Replace damaged plugs and sockets on lighting cables

2 products

USB Connectors

Plugs, sockets, receptacles, and adapters to make USB connections

76 products

Han Connectors

Plugs and sockets to make Han connections

8 products

Ballast Connectors

Avoid exposure to live wires when replacing fluorescent ballasts

2 products

Audio Connectors

Plugs, sockets, receptacles, and adapters to make audio connections

27 products

Power Connector Caps

Cover pin-and-sleeve power connectors when they're not in use

38 products

CB Radio Connectors

Sockets and receptacles to connect CB radios

2 products

Micro 360 Connectors

Plugs and sockets to make control and data connections in tight spaces

24 products

Mini Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Strain-Relief Connector Boots

Protect connectors and cords from strain, bends, and pulls

2 products

Mini Connector Caps

Shield mini connectors when they're not in use

13 products

ix Industrial Sockets

Pair with plugs to add ix Industrial connections to printed circuit boards

6 products

Metric Circular Connector Caps

Keep metric circular connectors safe when they're not in use

8 products

RJ45 Connector Caps

Protect sockets and maintain the IP67 rating when not in use

1 product

Breakaway Connectors

If pulled or stressed, these disconnect without damaging cables and equipment

3 products

Coaxial Connector Caps

Terminate the end of an unused coaxial cable

2 products

HDMI Adapters

Convert one HDMI size or style to another

14 products

HDMI Connector Caps

Protect HDMI sockets and maintain their IP rating when not in use

1 product

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

3 products

Video Adapters

Convert from one video connection to another

7 products

Fiber-Optic Connectors

Join fiber-optic cords that have the same gender and connection type

10 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

378 products

Terminal Blocks

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

699 products

Terminal and Splice Kits

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

17 products

Metric Circular Cords

Send power and signal to equipment with metric connections

474 products

Power Cords

Connect equipment and devices to a power source

263 products

Mini Cords

Often used to send power and control signals to automated systems, motors, and pumps

221 products

Extension Cords

Extend the reach of power from an outlet

381 products

USB Cords

Transfer data between computers, printers, and mobile devices

260 products

Solenoid Valve Cords

Connect solenoid components, such as valves and motors

60 products

Extension Cord Locks

Cover mated connectors on extension cords to prevent disconnection

3 products

D-Sub Cords

Connect computers, monitors, printers, and other devices with DB connections

24 products

Extension Cord Circuit Interrupter Converters

Hardwire to extension cords to protect against electric shock in wet areas

9 products

Sensor Signal Adapter Cords

Send data between sensors and receivers that have different signal types

2 products

Breakaway Cords

Disconnect if pulled to prevent stress on cord

6 products

Ethernet Cords

Send data between computers, printers, servers, and switches

2 products

Video Adapter Cords

Send video between devices with different connections

8 products

USB Cord Locks

Keep your USB cord from shaking loose or being yanked out

2 products

Distribution Bars

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

31 products

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

3 products

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 Blocks

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

47 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Distribution Posts

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

4 products

Slip Rings

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

4 products

USB Chargers

Power up mobile devices and other electronics

27 products

Welding Cable Connectors

Plugs and sockets to deliver power to welding cable

13 products

USB Extenders

Increase the reach of USB devices with a transmitter and receiver

3 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

2 products

Conduit and Fittings

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

1,352 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

1,169 products

Cable Entry Panels

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

127 products

Outlet Boxes

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

5 products

Weatherheads

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

10 products

Battery Terminals

Connect cable to battery posts to power vehicles and machines

131 products

Battery Connectors

Quickly make and break connections between a battery and a charger or equipment

43 products

Battery Contacts

Add or replace contacts in battery holders and circuit boards

18 products

Battery Cords

Connect batteries to each other

31 products

Battery Terminal Adapters

Convert one battery terminal style to another

6 products

Jumper Cable Clamps

Replace clamps on jumper cables

2 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

52 products

Jumper Cables

Jump-start a dead battery

12 products

Battery Terminal Fasteners

Replace bolts in battery terminals

3 products

Battery Springs

Replace springs in battery holders and contacts

8 products

Jumper Cords

Ready to connect with a terminal at one or both ends

17 products

Grounding Lugs

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

1 product

Grounding Blocks

In cabinets and other tight spaces, ground multiple wires at one convenient spot

8 products

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

15 products

Grounding Clamps

Attach grounding wire to equipment to ground electrical current

6 products

Grounding Rings

Create a pathway for stray currents to prevent damage to bearing surfaces in AC motors

22 products

EMI/RFI Suppressing Clips

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

64 products

Circuit Board Terminals

Connect wire to circuit boards

9 products

Circuit Board Voltage Regulators

Power circuits from a high-voltage source without frying your system

15 products

Circuit Board Connectors

Connect flat flexible cable to circuit boards

10 products

Electronic Component Assortments

Include diodes, rectifiers, and transistors to convert current or amplify electronic signals

2 products

Ribbon Switch Termination Kits

Pair with your cut-to-length ribbon switch for a complete system

3 products

Transformers

Raise or lower voltage to meet the needs of an individual circuit

237 products

Power Supplies

Convert your facility's AC voltage to power equipment that runs on DC voltage

259 products

Fastening and Joining

Welding Lugs

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

13 products

Snap-In Nuts

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

1 product

Measuring and Inspecting

Power Consumption Meters

Measure the amount of power your devices consume to help calculate energy costs

1 product

Decade Boxes

Test and troubleshoot circuits without needing to solder capacitors or replace resistors

3 products

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Lighting

Light Bulbs

Standard household, miniature, compact, and tubular bulbs

26 products

Light Switch/Receptacles

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

3 products

Light Transmitters

Light up small and hard-to-reach areas such as the inside of models, prototypes, and circuit boards

18 products

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

16 products

Building and Machinery Hardware

Grommets

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

70 products

Strut Channel Conduit Connection Plates

Convert strut channel into a raceway for electrical wiring

4 products

Fluid Handling

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

4 products

Heating, Ventilation, and Air Conditioning

Temperature-Controlled Outlet Adapters

Automatically turn heating and cooling devices on and off as temperatures rise and fall

3 products