Electrical Connectors | McMaster-Carr

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9,881 Products

Electrical

Terminals, Ferrules, and Lugs

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

1,271 products

Wire Splices

Join wire and protect the connection

359 products

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

3 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

1,075 products

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

394 products

Terminal and Splice Kits

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

17 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

664 products

Electrical Receptacles

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

1,019 products

Electrical Cords

Connect equipment and devices to a power supply

846 products

Distribution Bars

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

31 products

Electrical Connector Holding Tools

Hold electrical connectors in place to safely join wires

1 product

Split-Bolt Connectors

Splice large wire sizes without special tools

17 products

Electrical Connector Contacts

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

13 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

292 products

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

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

2 products

Distribution Posts

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

4 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Electrical Connector Seals

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

5 products

Electrical Connector Caps

Protect data connectors when not in use

78 products

Jumper Cable Clamps

Replace clamps on jumper cables

2 products

Jumper Cables

Jump-start a dead battery

12 products

Electrical Cord Locks

Cover mated connectors on extension cords to prevent disconnection

5 products

Circuit Board Terminals

Connect wire to circuit boards

9 products

Slip Rings

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

4 products

Electrical Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

1 product

Electrical Cord Circuit Interrupter Converters

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

9 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

1,190 products

Conduit and Conduit Fittings

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

1,062 products

Cable Entry Panels

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

120 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

Interference Suppressing Clips

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

64 products

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

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

28 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

60 products

Battery Springs

Replace springs in battery holders and contacts

8 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

14 products

Grounding Rings

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

20 products

Circuit Board Voltage Regulators

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

15 products

Electronic Component Kits

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

2 products

Transformers

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

239 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

12 products

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

2 products

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Lighting

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

Light Bulbs

Standard household, miniature, compact, tubular, ultraviolet, infrared, and blacklight bulbs

26 products

Building and Machinery Hardware

Grommets

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

68 products

Strut Channel Framing and Fittings

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

4 products

Fluid Handling

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

4 products