Electrical Connectors | McMaster-Carr

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9,857 Products

Electrical

Terminals, Ferrules, and Lugs

Terminals, Ferrules, and Lugs

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

Wire Splices, Connectors, and Taps

Wire Splices, Connectors, and Taps

Join wire and protect the connection

Wire Splice Covers

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Electrical Receptacles

Electrical Receptacles

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

Terminal Blocks

Terminal Blocks

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

Terminal and Splice Kits

Terminal and Splice Kits

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

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Electrical Connector Contacts

Electrical Connector Contacts

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

Distribution Bars

Distribution Bars

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

Electrical Connector Holding Tools

Electrical Connector Holding Tools

Hold electrical connectors in place to safely join wires

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

Terminal Adapters

Terminal Adapters

Convert wire terminals from one connection type or gender to another

Distribution Blocks

Distribution Blocks

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

Terminal Splitters

Terminal Splitters

Divide one male quick-disconnect connection into two

Distribution Posts

Distribution Posts

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

Electrical Connector Caps

Electrical Connector Caps

Protect data connectors when not in use

Electrical Connector Seals

Electrical Connector Seals

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

Jumper Cable Clamps

Jumper Cable Clamps

Replace clamps on jumper cables

Jumper Cables

Jump-start a dead battery

Electrical Connector Boots

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

Circuit Board Terminals

Circuit Board Terminals

Connect wire to circuit boards

Slip Rings

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

Electrical Cord Locks

Electrical Cord Locks

Cover mated connectors on extension cords to prevent disconnection

Electrical Connector Thread Adapters

Electrical Connector Thread Adapters

Join two connectors that both have internal threads

Electrical Cord Circuit Interrupter Converters

Electrical Cord Circuit Interrupter Converters

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

Outlet Strips

Plug in multiple devices to power them from a single outlet

Conduit Knockout Reducers

Conduit Knockout Reducers

Shrink knockout sizes in electrical boxes to connect smaller conduit

Conduit Box Connectors

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Conduit Bodies

Access wiring to pull, splice, or redirect it

Conduit Bushings

Conduit Bushings

Guard wiring from sharp edges at the ends of conduit

Conduit Locknuts

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

Conduit

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

Conduit Support Clips

Conduit Support Clips

Mount flexible plastic conduit to walls and machines

Conduit Bumpers

Conduit Bumpers

Shield sections of flexible conduit from impact to prevent wear

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Cable Entry Panels

Cable Entry Panels

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

Outlet Boxes

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

Weatherheads

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

Interference Suppressing Clips

Interference Suppressing Clips

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

Battery Terminals

Battery Terminals

Connect cable to battery posts to power vehicles and machines

Battery Terminal Adapters

Battery Terminal Adapters

Convert one battery terminal style to another

Battery Terminal Fasteners

Battery Terminal Fasteners

Replace bolts in battery terminals

Battery Connectors

Battery Connectors

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

Battery Contacts

Battery Contacts

Add or replace contacts in battery holders and circuit boards

Battery Holders

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

Battery Springs

Battery Springs

Replace springs in battery holders and contacts

Grounding Lugs

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

Grounding Blocks

Grounding Blocks

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

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

Grounding Rings

Grounding Rings

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

Circuit Board Voltage Regulators

Circuit Board Voltage Regulators

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

Transformers

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

Electronic Component Kits

Electronic Component Kits

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

Manual Switches

Manual Switches

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

Light Switch/Receptacles

Light Switch/Receptacles

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

Fastening and Joining

Welding Lugs

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

Snap-In Nuts

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

Measuring and Inspecting

Power Consumption Meters

Power Consumption Meters

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

Decade Boxes

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

Load Cell Junction Boxes

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

Lighting

Light Bulbs

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

Light Pipes

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

Light Transmitters

Light Transmitters

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

Building and Machinery Hardware

Grommets

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

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

Fluid Handling

Thermocouple Connectors

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

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