Copper Contacts | McMaster-Carr

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UL Recognized Component

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Compliant with Exemptions

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EAR99

DFARS Specialty Metals

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1,251 Products

Terminals, Ferrules, and Lugs

Wire Ferrule

Wire Ferrules

Turn flexible, stranded wire into one rigid wire for easy insertion

108 products

Wire Ferrule Assortments

Keep a variety of sizes and materials handy for quick circuit repairs and adjustments

8 products

Set Screw Lug

Set Screw Lugs

Quickly attach large wire without using a compression tool

43 products

Offset Set Screw Lugs

Extend vertically for easier wire insertion or adjustment

15 products

Stacked Set Screw Lugs

Connect multiple wires to a single lug

6 products

Multi-Angle Set Screw Lugs

Attachment points at several angles allow wire to thread past nearby obstructions

3 products

Tamper-Resistant Set Screw Lugs

Shear the screw heads off so your connection can’t be removed or altered

8 products

Set Screw Lug Assortments for Transformers

Set screw lugs, nuts, and bolts needed for several transformer types

2 products

Compression Lug

Compression Lugs

Squeeze onto the wire for a permanent, vibration-resistant connection

191 products

Tight-Hold Compression Lugs

A secure grip on the wire prevents pullout

2 products

Pin Compression Lugs

Turn flexible, stranded wire into one rigid wire for easy insertion

8 products

Finish-Your-Own Compression Lugs

Drill holes where you need them for whatever screw sizes work best

7 products

Heavy Duty Compression Lugs

A thicker body dissipates more heat from high electrical loads

8 products

Slotted Compression Lugs

Install screws at various points along the slot when screw spacing is uncertain or inconsistent

8 products

Pin Terminal

Pin Terminals

Fit tiny openings in terminal blocks and printed circuit boards

12 products

Heat-Shrink Pin Terminals

Insulation shrinks when heated to tightly grip and seal the wire

3 products

Ring Terminal

Ring Terminals

Encircle the whole screw to stay put when pulled or vibrated

189 products

Heat-Shrink Ring Terminals

Insulation shrinks when heated to tightly grip and seal the wire

27 products

Ring Terminal Assortments

Keep a variety of sizes and materials handy for quick circuit repairs and adjustments

6 products

Tight-Hold Heat-Shrink Ring Terminals

A secure grip on the wire prevents pullout

38 products

Multisize Elongated Ring Terminals

Fit multiple screw sizes so you can keep fewer terminals on hand

12 products

Twist-Resistant Block Ring Terminals

Fit securely in terminal blocks to resist turning and jostling

5 products

Heat-Shrink Multisize Elongated Ring Terminals

Heat to shrink the insulation for a tighter grip and seal than other multisize ring terminals

3 products

Blade Terminal

Blade Terminals

Flat for the strongest hold and conductivity in clamp-style connections

6 products

Flanged Blade Terminals

Less likely to fall than standard blade terminals if the connection loosens

6 products

Spade Terminal

Spade Terminals

Quickly slide into place without removing the screw

32 products

Twist-Resistant Block Spade Terminals

Fit securely in terminal blocks to resist turning and jostling

39 products

Locking Spade Terminals

The easiest spade terminals to connect—two forks slide past the screw then snap onto the shank

37 products

Heat-Shrink Spade Terminals

Insulation shrinks when heated to tightly grip and seal the wire

9 products

Heat-Shrink Flanged Spade Terminals

Heat to shrink the insulation for a tighter grip and seal than other flanged spade terminals

7 products

Spade Terminal Assortments for Thermocouples

Sizes and materials you need for accurate thermocouple readings

2 products

Tight-Hold Heat-Shrink Spade Terminals

A secure grip on the wire prevents pullout

10 products

Flanged Spade Terminals

Resist slipping and falling from control panels and other vertical surfaces

24 products

Heat-Shrink Locking Spade Terminals

Heat to shrink the insulation for a tighter grip and seal than other locking spade terminals

10 products

Tight-Hold Heat-Shrink Locking Spade Terminals

Grip wire more tightly and install more easily than other locking spade terminals

9 products

Quick-Disconnect Terminal

Quick-Disconnect Terminals

Pair with other quick-disconnects for fast adjustments

12 products

Quick-Disconnect Terminal Assortments

Keep a variety of sizes and materials handy for quick circuit repairs and adjustments

1 product

Heat-Shrink Piggyback Quick-Disconnect Terminals

Insulation shrinks when heated to tightly grip and seal the wire

3 products

Lay-In Lug

Easy-Insert Lay-In Lugs

Lay the stripped wire into the lug to attach to continuous runs

3 products

Snap-Plug Terminal

Snap-Plug Terminals

Space-saving alternative to quick-disconnect terminals

13 products

Heat-Shrink Snap-Plug Terminals

Insulation shrinks when heated to tightly grip and seal the wire

4 products

Hook Terminal

Hook Terminals

Quick to install and hold tightly enough to stay put through mild vibration

15 products

Box Lug

Box Lugs

Slide onto grounding or neutral bars in electrical panels

3 products

Other Products

Electrical Connector Contacts

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

4 products

Welding Lugs

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

13 products

Terminal Adapters

Convert wire terminals from one connection type or gender to another

6 products

Slip Rings

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

4 products

Battery Terminals

Connect cable to battery posts to power vehicles and machines

124 products

Antiseize Lubricants

Prevent threaded fasteners from sticking due to rust, dirt, and heat

31 products

Wire Splices

Connect wires end to end to extend or repair a run

17 products

Rivets

Join materials together permanently, especially when too thin or fragile to fasten with screws

25 products

Circuit Board Voltage Regulators

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

15 products

Electrical Cords

Connect equipment and devices to a power supply

7 products

Jumper Cables

Jump-start a dead battery

12 products

Circuit Board Terminals

Connect wire to circuit boards

2 products

Distribution Bars

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

24 products

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

6 products

Grease

Thicker than oil to evenly lubricate surfaces and stay in place

1 product

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

2 products

MIG Gun Gas Diffusers

Evenly distribute shielding gas for high-quality MIG welds

1 product