Copper Wire | McMaster-Carr

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Yes

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For Joining

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3,501 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

311 products

Power Cable

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

309 products

Control Cable

Send signals to control machinery and automated systems

589 products

Building Wire

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

36 products

Vehicle Wire

Make connections in low-voltage vehicle wiring systems

112 products

Battery Wire

Transmit power from batteries in vehicles, generators, and appliances

27 products

Vehicle Cable

Make multiple connections in low-voltage vehicle wiring systems

12 products

Security Cable

Connect low-current security and intercom systems

53 products

Building Cable

With designations such as NM and UF, building cable brings power to wall outlets and outlet boxes

36 products

Magnet Wire

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

26 products

Irrigation Cable

Supply low-voltage power in sprinkler systems

8 products

Variable-Frequency Drive Motor Cable

Connect variable-frequency drive motors to equipment

13 products

Servo Cable

Connect servocontrollers and servomotors in automated equipment and on assembly lines

8 products

Thermostat Cable

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

12 products

Ethernet Cable

Send data between computers, printers, servers, and switches

20 products

Pendant Cable

Supply power from an overhead source

8 products

CAN-Bus Cable

Connect devices in CAN-Bus communication networks

6 products

Speaker Cable

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

4 products

Coaxial Cable

Transmit audio, data, and video signals

3 products

Fieldbus Cable

Connect devices in Fieldbus communication networks

1 product

Outdoor Lighting Cable

Power low-voltage lighting equipment, such as landscape lighting

3 products

DeviceNet Cable

Connect devices in DeviceNet communication networks

4 products

Circuit Board Cords

Short lengths of terminated wire make temporary connections on circuit boards

24 products

Submersible Pump Cable

Supply power to submersible pumps in water or oil wells

2 products

Ribbon Cable

Ultra flexible to connect components inside electronics

6 products

Fire Alarm Cable

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

8 products

Profibus Cable

Connect devices in Profibus communication networks

3 products

Profinet Cable

Connect devices in Profinet communication networks

2 products

Telephone Cable

Connect telephones and telephone blocks to a wall jack

6 products

Modbus Cable

Connect devices in Modbus communication networks

2 products

Ethernet Cords

Send data between computers, printers, servers, and switches

10 products

Welding Cable

Resist abrasion while carrying current for welding

28 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

338 products

Wrap Wire

Wrap around a circuit board post terminal without the need for soldering

11 products

Molex Plug and Socket Sets

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

26 products

Micro 360 Plugs

Pair with sockets to make signal and data connections in tight spaces

10 products

Power Plug and Socket Sets

Mating components that are ready to connect to a power source

14 products

Metric Circular Connectors

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

43 products

Amphenol Plugs

Mate with a housing to attach wires to a circuit board

13 products

RJ45 Plugs

Pair with sockets or receptacles to make Ethernet connections

7 products

Grounding Wire

Ground current in electrical systems

38 products

Grounding Straps

Flat shape creates more surface area contact than grounding wire

22 products

Bonding and Grounding Clamps

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

21 products

Lightning Rods

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

8 products

Battery Cords

Connect batteries to each other

24 products

Jumper Cords

Ready to connect with a terminal at one or both ends

7 products

Jumper Cables

Jump-start a dead battery

12 products

Circuit Board Cable

Flat and flexible, connect circuit boards inside electronic devices

20 products

Circuit Board Connectors

Connect flat flexible cable to circuit boards

10 products

Wire Sleeving

Bundle wiring and protect from abrasion and heat

23 products

Cable Support Grips

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

28 products

Conduit

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

6 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

34 products

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

77 products

Raw Materials

Copper

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

99 products

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

12 products

Material Handling

Wire Rope Compression Sleeves

Install a permanent loop at wire rope ends using a compression tool

84 products

Wire Rope

Lift, hang, and connect objects; more abrasion resistant than rope and lighter weight than chain

10 products

Wire Rope End Fittings

Finish wire rope ends with threaded stud, eye, clevis, ball, hook, and other connections

2 products

Wire Rope Stops

Prevent wire rope from pulling out of cleats and guides or keep ends from fraying

26 products

Compression Tools

Crimp sleeves around rope and wire rope to create loops for attaching fittings

39 products

Lanyards

Pull, hang, tie down, and tether objects with the attached fittings

129 products

Wire Rope Clamps

Form a removable loop at the ends of wire rope by tightening the nuts

4 products

Box Stitching Wire

Refill electric box-bottom stitchers

2 products

Fastening and Joining

Solder

Join pieces of metal without melting the base material

342 products

Brazing Alloys

Form stronger bonds between metal parts than solder without melting the base material

126 products

MIG Welding Wire

Use with MIG welders to fuse metals together

12 products

TIG Welding Rods

Add extra metal while TIG welding to help flatten welds and hold workpieces together

22 products

Measuring and Inspecting

Test Lead Wire

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

4 products

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

5 products

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

2 products

Fabricating and Machining

Wire Cutters

Snip through various types of wire, even hardened and steel-reinforced wire

1 product

3D Printer Filaments

Run through filament 3D printers to form plastic parts

1 product

Fluid Handling

Heating Tape

Wrap around pipe and tube to heat them

63 products

Communication

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

3 products

Building and Machinery Hardware

Mechanical Control Cables

Weave around obstructions to operate valves, throttles, and other machinery from a distance

3 products