Electrical Fittings | McMaster-Carr

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Fiberglass-Reinforced Polymer Concrete

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Adjustable-Angle Elbow

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2B999

3A992

EAR99

DFARS Specialty Metals

16,576 Products

Electrical Power, Networking, and Controlling

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

Electrical Enclosure Plugs

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

77 products

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

85 products

Outlet Boxes

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

208 products

Electrical Enclosures

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

2,207 products

Raceway and Fittings

Route and guard wiring along surfaces in your facility

297 products

Cable Pulling Grips

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

14 products

Fish Tape

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

13 products

Conduit Threading Line

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

1 product

Fish Tape Leaders

Join fish tape to wire for guiding it around conduit bends

1 product

Fish Tape Pullers

Latch onto fish tape or rope for a secure, two-hand grip when pulling wire

1 product

Wire and Cable Push-Pull Rods

Maneuver cable inside drop ceilings and walls

4 products

Outlet Box Extenders

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

50 products

Cable Entry Panels

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

127 products

Weatherheads

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

10 products

Cable Support Grips

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

75 products

Potting Boxes

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

16 products

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

Electronics Racks

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

9 products

Electronics Cabinets

Store and organize servers, computers, and automation controls

15 products

Electrical Enclosure Covers

Replace Fibox enclosure covers

98 products

Electrical Enclosure Mounting Channels

Position components inside electrical enclosures without drilling holes, which can leak

9 products

Underground Enclosures

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

9 products

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

14 products

Electrical Enclosure Floor Stands

Mount enclosures to the floor above hazards such as water

8 products

Terminals, Ferrules, and Lugs

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

1,267 products

Mini Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Power Connectors

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

1,544 products

Coaxial Connectors

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

59 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

206 products

Mil. Spec. Connectors

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

167 products

Metric Circular Connectors

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

333 products

D-Sub Connectors

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

145 products

Han Connectors

Plugs and sockets to make Han connections

8 products

Power Connector Caps

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

38 products

Audio Connectors

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

27 products

Amphenol Connectors

Attach wires to a circuit board

32 products

Solenoid Valve Connectors

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

17 products

Mini Connector Caps

Shield mini connectors when they're not in use

13 products

Strain-Relief Connector Boots

Protect connectors and cords from strain, bends, and pulls

2 products

Ecomate Connectors

Connect machine tools, robots, and other vibrating equipment

14 products

USB Connectors

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

76 products

CB Radio Connectors

Sockets and receptacles to connect CB radios

2 products

DisplayPort Connectors

Connect two DisplayPort cords of the same gender and connection type

1 product

RJ45 Connectors

Plugs, sockets, and receptacles to make Ethernet connections

85 products

Video Adapters

Convert from one video connection to another

7 products

Ballast Connectors

Avoid exposure to live wires when replacing fluorescent ballasts

2 products

ix Industrial Sockets

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

6 products

AMP Connectors

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

80 products

Fiber-Optic Connectors

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

10 products

Molex Connectors

Plugs, sockets, and housings for making Molex connections

180 products

Breakaway Connectors

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

3 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

Mini Connectors

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

78 products

Micro 360 Connectors

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

24 products

HDMI Adapters

Convert one HDMI size or style to another

14 products

RJ45 Connector Caps

Protect sockets and maintain the IP67 rating when not in use

1 product

HDMI Connector Caps

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

1 product

Coaxial Connector Caps

Terminate the end of an unused coaxial cable

2 products

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

3 products

Metric Circular Connector Caps

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

8 products

Mil. Spec. Connector Caps

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

12 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

378 products

Terminal and Splice Kits

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

17 products

Pendant Cable Hardware Kits

Hang equipment from drop-down cable

1 product

Metric Circular Cords

Send power and signal to equipment with metric connections

474 products

Profibus Cords

Transmit data in automation systems and other networks

4 products

Power Cords

Connect equipment and devices to a power source

263 products

Breakaway Cords

Disconnect if pulled to prevent stress on cord

6 products

Mitutoyo Cords

Connect your measuring tool to miniprocessors, multiplexers, or PCs

22 products

Solenoid Valve Cords

Connect solenoid components, such as valves and motors

60 products

Ethernet Cords

Send data between computers, printers, servers, and switches

318 products

Fiber-Optic Cords

Connect computers, servers, and switches in a fiber-optic network

34 products

Video Adapter Cords

Send video between devices with different connections

8 products

Audio Cords

Hook up speakers to an audio signal

13 products

Thunderbolt Cords

Transmit data and video at high speeds between PCs, mobile devices, and displays

2 products

DMX Cords

Connect to lighting equipment with five-pin XLR connections

3 products

Coaxial Cords

Transmit audio, video, and data with minimal signal loss

70 products

Sensor Signal Adapter Cords

Send data between sensors and receivers that have different signal types

2 products

DisplayPort Cords

Send video from computers to monitors and other displays

26 products

Mini Cords

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

221 products

Robot Controller Cords

Extend the distance between a robot arm and a controller

3 products

D-Sub Cords

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

199 products

USB Cords

Transfer data between computers, printers, and mobile devices

260 products

HDMI Cords

Send high-definition signals to monitors, TVs, and projectors

21 products

ix Industrial Cords

Send data or signals between equipment, such as a servomotor and encoder

6 products

Extension Cords

Extend the reach of power from an outlet

381 products

Robot Teach Pendant Cords

Connect robot controllers and teach pendants

25 products

Terminal Adapters

Convert wire terminals from one connection type or gender to another

7 products

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

3 products

Welding Cable Connectors

Plugs and sockets to deliver power to welding cable

13 products

Terminal Blocks

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

699 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Data Port Locks

Block USB or Ethernet ports from unauthorized use

9 products

Data Port Plugs

Keep dust, debris, and moisture out of unused computer ports

3 products

USB Chargers

Power up mobile devices and other electronics

27 products

USB Extenders

Increase the reach of USB devices with a transmitter and receiver

3 products

Grounding Clamps

Attach grounding wire to equipment to ground electrical current

6 products

Grounding Lugs

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

1 product

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 Breaker Box Filler Plates

Conceal live electrical components in circuit breaker boxes to prevent injury and damage

2 products

Single-Board Computer Enclosures

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

9 products

Ribbon Switch Termination Kits

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

3 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 Enclosures

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

82 products

Circuit Board Connectors

Connect flat flexible cable to circuit boards

10 products

Jumper Cables

Jump-start a dead battery

12 products

Battery Terminal Fasteners

Replace bolts in battery terminals

3 products

Battery Terminal Adapters

Convert one battery terminal style to another

6 products

Battery Terminals

Connect cable to battery posts to power vehicles and machines

131 products

Jumper Cords

Ready to connect with a terminal at one or both ends

17 products

Battery Cords

Connect batteries to each other

31 products

Power Supplies

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

259 products

Material Handling

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

690 products

Pipe Hangers

Suspend pipe, conduit, and tube from rods, hooks, and straps

88 products

Railing Clamps

Clamp onto metal tubes to hang lighting fixtures, threaded rod, and equipment

15 products

Cable Pulling Clamps

Maintain tension until a line can be permanently anchored

11 products

Building and Machinery Hardware

Grommets

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

943 products

Strut Channel Framing and Fittings

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

7 products

Protective Plugs

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

248 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

87 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

Lighting

Light Socket Adapters

Convert light fixtures to accept different bulbs

1 product

Light Switch Sensor Controllers

Turn lights on and off or dim them in unison from a secure Bluetooth network

1 product

Light Switch/Receptacles

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

3 products

Fiber-Optic Flashlight Cable

Shine light into hard-to-reach spaces by attaching to your flashlight

1 product

Fluid Handling

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

4 products

Measuring and Inspecting

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Containers, Storage, and Furniture

Shelves

Use with frames to support and store a variety of items

8 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