18 Gauge Wire | McMaster-Carr

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American Wire Gauge (AWG)

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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607 Products

Electrical Power, Networking, and Controlling

Lead Wire

Your go-to wire for everything from electrical panels to plant equipment; also known as hook-up wire

36 products

Power Cable

Deliver power to motors, pumps, appliances, computers, and more

58 products

Control Cable

Send signals to control machinery and automated systems

138 products

Security Cable

Connect low-current security and intercom systems

17 products

Vehicle Wire

Make connections in low-voltage vehicle wiring systems

19 products

Irrigation Cable

Supply low-voltage power in sprinkler systems

8 products

Vehicle Cable

Make multiple connections in low-voltage vehicle wiring systems

1 product

Building Wire

With designations such as THHN or THWN, building wire brings power to wall outlets and outlet boxes

2 products

Servo Cable

Connect servocontrollers and servomotors in automated equipment and on assembly lines

3 products

VFD Motor Cable

Connect variable-frequency drive motors to equipment

4 products

Fieldbus Cable

Connect devices in Fieldbus communication networks

1 product

Thermostat Cable

Hook up thermostats, air-conditioning units, and other low-voltage equipment

6 products

Power Cords

Connect equipment and devices to a power source

83 products

Coaxial Cable

Transmit audio, data, and video signals

2 products

Fire Alarm Cable

Protected by flame-resistant insulation for critical circuits in fire alarm systems

6 products

Thermocouple Wire

Connect thermocouples to switches, controllers, recorders, and thermometers

2 products

Magnet Wire

Wind into coils for high-speed winding applications, such as motors, transformers, and relays

2 products

Speaker Cable

Hook up speakers, intercoms, and other low-current devices to a building's wiring

1 product

DeviceNet Cable

Connect devices in DeviceNet communication networks

2 products

Solenoid Valve Cords

Connect solenoid components, such as valves and motors

56 products

Extension Cords

Extend the reach of power from an outlet

1 product

Metric Circular Cords

Send power and control signals to equipment with metric connections

39 products

Coaxial Cords

Transmit audio, video, and data with minimal signal loss

5 products

Wire Taps

Connect a tap wire to a main wire without stripping

12 products

Molex Plug and Socket Sets

Come with wire leads installed for quick additions to existing Molex systems

30 products

AMP Plug and Socket Sets

Come with wire leads installed for quick additions to existing AMP systems

20 products

Power Connectors

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

10 products

Metric Circular Receptacles

Install in walls and panels and pair with plugs to make metric connections

25 products

Jumper Cords

Ready to connect with a terminal at one or both ends

4 products

Measuring and Inspecting

Patch Cords

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

7 products

Test Lead Wire

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

2 products

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

14 products