Electrical Hardware | McMaster-Carr

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Electrical Connection

1" Circular Connector

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ABS Type Approved

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How can we improve?

17,875 Products

Most Likely Products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Grounding Lugs

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

Electrical Cable

Electrical Cable

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

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

All Results

Electrical

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Conduit and Cord Grip Thread Adapters

Conduit and Cord Grip Thread Adapters

Connect to fittings and openings that have a different thread type

Conduit Box Connectors

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

Conduit Locknuts

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

Conduit Bodies

Access wiring to pull, splice, or redirect it

Conduit Support Clips

Conduit Support Clips

Mount flexible plastic conduit to walls and machines

Conduit Threading Line

Conduit Threading Line

Vacuum or blow through conduit and attach to a rope for pulling cable

Conduit

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

Conduit Bumpers

Conduit Bumpers

Shield sections of flexible conduit from impact to prevent wear

Conduit Knockout Reducers

Conduit Knockout Reducers

Shrink knockout sizes in electrical boxes to connect smaller conduit

Conduit Bushings

Conduit Bushings

Guard wiring from sharp edges at the ends of conduit

Conduit Locknut and Reaming Pliers

Conduit Locknut and Reaming Pliers

Tighten conduit locknuts and ream both the inside and outside of conduit with a single tool

Fish Tape

Hook to the end of wire and move it through conduit and raceway

Outlet Boxes

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

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

Weatherheads

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

Cable Pulling Grips

Cable Pulling Grips

Tug on the loop to tighten wire mesh around cable and pull it through conduit

Cable Support Grips

Cable Support Grips

Reduce tension and vibration that damage hanging cable; also known as bus drop grips

Potting Boxes

Fill with potting compound to protect electronic assemblies from dust, moisture, and vibration

Electrical Enclosures

Electrical Enclosures

House and protect power supplies, control panels, and other electrical equipment

Outlet Box Extenders

Outlet Box Extenders

Add depth to an outlet box when there’s not enough space for components

Electronics Racks

Electronics Racks

Mount servers, automation controls, and computers in less space than electronics cabinets

Electronics Cabinets

Electronics Cabinets

Store and organize servers, computers, and automation controls

Outlet Box Covers

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

Wire and Cable Push-Pull Rods

Wire and Cable Push-Pull Rods

Maneuver cable inside drop ceilings and walls

Electrical Enclosure Covers

Electrical Enclosure Covers

Replace Fibox enclosure covers

Cable Entry Panels

Cable Entry Panels

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

Interference Suppressing Clips

Interference Suppressing Clips

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

Raceway and Raceway Fittings

Raceway and Raceway Fittings

Route and guard wiring along indoor surfaces

Console Enclosures

Console Enclosures

Build out interfaces with buttons, gauges, and other components to monitor and control machinery

Tablet Enclosures

Tablet Enclosures

Protect tablets and displays from dust and washdowns

Electronics Rack Equipment Installation Supports

Electronics Rack Equipment Installation Supports

Create temporary ledges to support heavy equipment as you mount it to a rack

Underground Enclosures

Underground Enclosures

Bury in the ground or in concrete to protect and access utilities such as electric and water lines

Single-Board Computer Enclosures

Single-Board Computer Enclosures

Protect your Raspberry Pi, Arduino, or other board from dust and impact

Circuit Board Enclosures

Circuit Board Enclosures

Hold circuit boards to protect them from dust, liquids, or overheating

Electrical Enclosure Pole Mounts

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

Electrical Enclosure Floor Stands

Electrical Enclosure Floor Stands

Mount enclosures to the floor above hazards such as water

Electrical Cable

Electrical Cable

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

Electrical Cable Hardware Kits

Electrical Cable Hardware Kits

Hang equipment from drop-down cable

Electrical Plugs

Electrical Plugs

Pair with sockets 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

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Wire Splices, Connectors, and Taps

Wire Splices, Connectors, and Taps

Join wire and protect the connection

Electrical Wire

Electrical Wire

Make single-wire connections; generally for lower voltages and shorter distances than cable

Electrical Connector Thread Adapters

Electrical Connector Thread Adapters

Join two connectors that both have internal threads

Wire Splice Covers

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

Wire Wrapping Tools

Wire Wrapping Tools

Wrap circuit board wire tightly around post terminals for a strong connection

Terminal Splitters

Terminal Splitters

Divide one male quick-disconnect connection into two

Terminal and Splice Kits

Terminal and Splice Kits

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

Electrical Cord Adapters

Electrical Cord Adapters

Change the electrical connection style between an outlet and your equipment

Terminals, Ferrules, and Lugs

Terminals, Ferrules, and Lugs

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

Terminal Blocks

Terminal Blocks

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

Distribution Blocks

Distribution Blocks

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

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

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

Electrical Connector Seals

Electrical Connector Seals

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

Electrical Connector Boots

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

Outlet Strips

Plug in multiple devices to power them from a single outlet

Circuit Board Headers

Circuit Board Headers

Make quick connections to development boards and other circuit boards when prototyping

Circuit Board Terminals

Circuit Board Terminals

Connect wire to circuit boards

Development Board Cords

Development Board Cords

Connect your development board to components such as sensors and actuators

Electrical Cord Reels

Electrical Cord Reels

Neatly store electrical cords for easy access

Terminal Adapters

Terminal Adapters

Convert wire terminals from one connection type or gender to another

Electrical Connector Caps

Electrical Connector Caps

Protect data connectors when not in use

Outlet Strip Mounts

Outlet Strip Mounts

Snap in outlet strips for quick mounting on flat surfaces

Grounding Lugs

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

Bonding and Grounding Reels

Bonding and Grounding Reels

Neatly store included grounding clamp and cable, which prevent static buildup; tug to retract cable

Grounding Wire

Ground current in electrical systems

Grounding Straps

Grounding Straps

Flat shape creates more surface area contact than grounding wire

Bonding and Grounding Clamps

Bonding and Grounding Clamps

Add cable or use included cable to create a grounding path, which prevents static charge buildup

Grounding Rings

Grounding Rings

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

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

Lightning Rods

Attract lightning strikes to safely redirect them from the tops of buildings to the ground

Resistors

Limit the electrical current flowing through circuits, adjust signal levels, and divide voltages

Circuit Board Voltage Regulators

Circuit Board Voltage Regulators

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

Varistors

Protect sensors, programmable logic controllers, and other small components from electrical surges

Diodes

Route current in one direction and block it in the other to protect sensitive electronics

Voltage Adapters

Voltage Adapters

Change AC voltage to DC voltage to power a device

Transformers

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

Inverters

Transform DC voltage to power devices that run on AC voltage; prevent overload damage

Rectifiers

Convert AC voltage to a constant DC voltage on a circuit board

Battery Terminal Fasteners

Battery Terminal Fasteners

Replace bolts in battery terminals

Battery Terminal Adapters

Battery Terminal Adapters

Convert one battery terminal style to another

Development Boards

Development Boards

Prototype electronics and build simple automation systems by configuring inputs and outputs

Snap-Acting Switches

Snap-Acting Switches

Open and close circuits quickly to minimize arcing and sticking; often used as door-open indicators

Battery Chargers

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

Circuit Boards

Create your own circuit board designs by adding components

Battery Holders

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

Sensor Switches

Sensor Switches

Detect moving objects from a distance, triggering a circuit to open or close

Development Board Programming Modules

Development Board Programming Modules

Program development boards and other custom circuit boards

Electronic Component Kits

Electronic Component Kits

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

Development Board Holders

Development Board Holders

Keep a development board and breadboard in one spot for prototyping

Battery Terminals

Battery Terminals

Connect cable to battery posts to power vehicles and machines

Manual Switches

Manual Switches

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

Magnetic Switches

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

Battery Contacts

Battery Contacts

Add or replace contacts in battery holders and circuit boards

Light Switch Sensor Guards

Light Switch Sensor Guards

Protect light switch sensors from damage and vandalism

Circuit Board Capacitors

Circuit Board Capacitors

Store electrical energy then release it all at once to briefly boost power to circuit boards

Wire and Cable Crimpers

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

Single-Board Computers

Single-Board Computers

Combine the functionality of a PC with the flexibility of a development board’s inputs and outputs

Development Board Sensor Modules

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

Computers

Sturdy and reliable for harsh industrial jobsites, from frigid freezers to sweltering foundries

Light Switch/Receptacles

Light Switch/Receptacles

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

Material Handling

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

Pipe Supports

Brace pipe, tube, and conduit that needs to be routed between studs or elevated off the floor

Bungee Cord Locks

Bungee Cord Locks

Position on bungee cords to create stops and keep the cords from rubbing against surfaces

Cable Pulling Clamps

Cable Pulling Clamps

Maintain tension until a line can be permanently anchored

Ring Links

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

Vacuum Lifters

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

Measuring and Inspecting

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

Patch Cords

Make point-to-point connections between electrical testing equipment and your devices

BNC Test Cords

Connect oscilloscopes and other testers to your equipment

Power Consumption Meters

Power Consumption Meters

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

Test Lead Wire

Add your own clips, tips, and adapters to link electrical testers to the units you're checking

Magnetic Field Indicators

Magnetic Field Indicators

Measure the strength of a magnetic field in gauss

Load Cell Junction Boxes

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

Decade Boxes

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

Fabricating and Machining

Electronic-Component Positioning Stands

Electronic-Component Positioning Stands

Pin components against a circuit board to free up your hands for soldering

Raw Materials

Copper

Our most conductive metal for electrical applications—all with material certificates for traceability

Fastening and Joining

Snap-In Nuts

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

MIG Welding Wire

MIG Welding Wire

Use with MIG welders to fuse metals together

Welding Cables

Quickly connect your welder to an electrode or other component, or ground your setup

Welding Lugs

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

Fluid Handling

Thermocouple Cords

Thermocouple Cords

Extend the reach of thermocouple probes

Thermocouple Connectors

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

Pressure Transmitters

Pressure Transmitters

Send pressure readings to controllers and remote displays

Thermocouple Connector Covers

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

Containers, Storage, and Furniture

Shelves

Use with frames to support and store a variety of items

Lighting

Light Bulbs

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

Light Socket Adapters

Light Socket Adapters

Convert light fixtures to accept different bulbs

Building and Machinery Hardware

Grommets

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

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

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

Communication

Display Screens

Display Screens

Display text, numbers, symbols, and other information from your electronics

Computer Monitors

Computer Monitors

Display information in tough conditions such as on factory floors and outdoor jobsites

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