McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    30 Products

    Solder and Compression Welding Lug Assortments

    Image of Product. Front orientation. Welding Lugs. Solder and Compression Welding Lug Assortments.
    Keep a variety of welding lug sizes on hand. Either solder these welding lugs into place, or use a hammer-on crimper (not included) for a secure connection.
    No. of
    Pieces
    Includes
    For Wire
    Material
    For Wire
    Construction
    Terminal
    Material
    Max. Temp.,
    ° F
    Max. Voltage,
    V DC
    Each
    1 Hole—For 1 Wire
    686 AWG for 1/4", 5/16" and 3/8" Screws, 4 AWG for 1/4", 5/16", 3/8" and 1/2" Screws, 2 AWG, 1/0-4/0 for 3/8" and 1/2" Screws; Plastic Compartmented CaseCopperStranded
    Copper190484189N11000000
     

    Terminal and Splice Kits

    Maintain a supply of extra terminals and splices in various sizes. Use a crimping tool (included with some kits) to install wire.
    Barrel Insulated, Fully Insulated
    Image of Product. Front orientation. Terminal and Splice Kits.
    Barrel-insulated terminals have a plastic cover to prevent short-circuiting with nearby wire.
    Fully insulated terminals have a connection tab that’s completely covered, leaving no metal exposed when mated.
    Nylon Insulation—Nylon insulation is more durable and chemical resistant than vinyl insulation.
    No. of
    Pieces
    Includes
    Insulation
    Material
    Max. Temp.,
    ° F
    Max. Voltage
    Certification
    Each
    120Crimping Tool
    Ring Terminals (16-10 AWG)—Barrel Insulated
    Spade Terminals (22-14 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Barrel Insulated
    Butt Splices (22-10 AWG)—Fully Insulated
    Plastic case
    Vinyl Plastic165600V AC
    600V DC
    UL Listed, CSA Certified
    7121K23000000
    243Ring Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-10 AWG)—Fully Insulated
    Butt Splices (22-10 AWG)—Fully Insulated
    Insulation-Piercing Wire Taps (18-14 AWG)—Fully Insulated
    Metal Case
    Nylon
    165600V AC
    600V DC
    7121K17000000
    490Crimping Tool
    Ring Terminals (22-10 AWG)—Barrel Insulated
    Spade Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Fully Insulated
    Crimp-On Wire Connectors (22-10 AWG; 22-14 AWG)
    Butt Splices (22-10 AWG)—Fully Insulated
    Insulation-Piercing Wire Taps (16-14 AWG)—Fully Insulated
    Metal Case
    Vinyl Plastic165600V AC
    600V DC
    UL Listed, CSA Certified
    7121K3000000
    Barrel Insulated, Fully Insulated, Noninsulated
    Image of Product. Front orientation. Terminal and Splice Kits.
    Barrel-insulated terminals have a plastic cover to prevent short-circuiting with nearby wire.
    Fully insulated terminals have a connection tab that’s completely covered, leaving no metal exposed when mated.
    Noninsulated terminals allow you to easily inspect the wire connection.
    Nylon Insulation—Nylon insulation is more durable and chemical resistant than vinyl insulation.
    No. of
    Pieces
    Includes
    Insulation
    Material
    Max. Temp.,
    ° F
    Max. Voltage
    Each
    425Ring Terminals (26-24 AWG)—Barrel Insulated
    Ring Terminals (26-24 AWG)—Noninsulated
    Spade Terminals (24-20 AWG)—Noninsulated
    Spade Terminals (26-24 AWG)—Barrel Insulated
    Female Quick-Disconnect Terminals (26-24 AWG)—Barrel Insulated
    Female Quick-Disconnect Terminals (26-24 AWG)—Fully Insulated
    Butt Splices (26-22 AWG)—Fully Insulated
    Metal Case
    Nylon
    165600V AC
    600V DC
    7121K180000000
    530Ring Terminals (8-6 AWG)—Noninsulated
    Ring Terminals (16-10 AWG)—Barrel Insulated
    Spade Terminals (16-10 AWG)—Barrel Insulated
    Female Snap-Plug Terminals (16-14 AWG)—Fully Insulated
    Male Snap-Plug Terminals (16-14 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Barrel Insulated
    Four-Way Terminals (16-14 AWG)—Barrel Insulated
    Hook Terminals (16-14 AWG)—Barrel Insulated
    Butt Splices (16-10 AWG)—Fully Insulated
    Reducing Butt Splices (16-10 AWG)—Fully Insulated
    Metal Case
    Nylon, PVC
    165600V AC
    600V DC
    7121K16000000
    Noninsulated
    Image of Product. Front orientation. Terminal and Splice Kits.
    Noninsulated terminals allow you to easily inspect the wire connection.
    No. of
    Pieces
    Includes
    Max. Temp.,
    ° F
    Max. Voltage
    Certification
    Each
    185Ring Terminals (22-10 AWG)—Noninsulated
    Female Quick-Disconnect Terminals (22-10 AWG)—Noninsulated
    Butt Splices (22-10 AWG)—Noninsulated
    Plastic case
    220Not Rated7121K14000000
    240Crimping Tool
    Ring Terminals (16-10 AWG)
    Spade Terminals (22-14 AWG)
    Male and Female Quick-Disconnect Terminals (16-14 AWG)
    Butt Splices (22-10 AWG)
    Plastic case
    165600V AC
    600V DC
    UL Listed, CSA Certified
    7121K2100000
    460Ring Terminals (16-10 AWG)—Noninsulated
    Spade Terminals (16-10 AWG)—Noninsulated
    Hook Terminals (16-14 AWG)—Noninsulated
    Butt Splices (16-10 AWG)—Noninsulated
    Metal Case
    345600V AC
    600V DC
    7121K15000000
    900Crimping Tool
    Ring Terminals (22-10 AWG)
    Spade Terminals (22-10 AWG)
    Male and Female Quick-Disconnect Terminals (16-14 AWG)
    Butt Splices (22-10 AWG)
    Metal Case
    165600V AC
    600V DC
    UL Listed, CSA Certified
    7121K4000000

    Quick-Connect Clamp-On Wire Connector Assortments

    Image of Product. Front orientation. Wire Splices, Connectors, and Taps. Quick-Connect Clamp-On Wire Connector Assortments.
    Install and service setups for two, three, and five wires, then reuse these connectors later. They pop on and off wire with the flip of a clamp to save time over crimping. Choose them for setups that change often, such as prototypes and testing. They even have test sockets to safely test voltage after installation. The assortments include DIN-rail adapters so you can snap connectors into a control panel.
    No. of
    Pieces
    Includes
    For Wire
    Construction
    Terminal
    Material
    Max. Temp.,
    ° F
    Max. Voltage
    No. of Test
    Sockets
    Certification
    Container Type
    Each
    Polycarbonate Insulation
    22924 to 12 AWG Clamp-On Wire Connectors for 2 Wires, Clear with Orange Lever (100)
    24 to 12 AWG Clamp-On Wire Connectors for 3 Wires, Clear with Orange Lever (100)
    24 to 12 AWG Clamp-On Wire Connectors for 5 Wires, Clear with Orange Lever (25)
    Four 35 mm DIN Rail Adapters
    Solid, Stranded
    Tin-Plated Copper185600V AC
    600V DC
    2UL Listed
    Compartmented Plastic Box4283N110000000
     

    Ring Terminal Assortments

    Image of Product. Front orientation. Terminals, Ferrules, and Lugs. Ring Terminal Assortments.
    Install, extend, or rewire a circuit without hunting down new terminals. These assortments include ring terminals for most small and medium wire gauges and screws. Labels in the lid include our part numbers, so it's easy to replenish your assortment.
    Ring terminals encircle the whole the screw shank, so they stay put better than spade and hook terminals when vibrated or pulled. Attach wire with a crimping tool to avoid a damaged barrel and loose connection.
    Vinyl Plastic Insulation—Our basic insulation, vinyl prevents the wire from short circuiting and won’t break down from dirt, grime, and occasional twists and tugs.
    Nylon Insulation—In addition to preventing short circuits, this wear-resistant insulation protects wire from vibration and rubbing against nearby edges.
    Noninsulated—The basic, economical option when short circuits from nearby wiring aren't a concern.
    No. of
    Pieces
    Includes
    Terminal
    Material
    Max. Temp.,
    ° F
    Max. Voltage
    Container Type
    Each
    Vinyl Plastic Insulation
    180Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper220600V AC
    600V DC
    Compartmented Plastic Box8853T18000000
    300Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper220600V AC
    600V DC
    Compartmented Plastic Box8853T1900000
     
    Nylon Insulation
    180Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper220600V AC
    600V DC
    Compartmented Plastic Box8853T2500000
    300Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper220600V AC
    600V DC
    Compartmented Plastic Box8853T26000000
     
    Noninsulated
    180Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper300Not RatedCompartmented Plastic Box8853T1100000
    300Ring Terminals (22 to 18 AWG, 16 to 14 AWG, 12 to 10 AWG)Tin-Plated Copper300Not RatedCompartmented Plastic Box8853T1200000
     

    High-Temperature Terminal and Splice Kits

    Designed for use in high-temperature applications such as motors, ovens, and furnaces, these kits include a variety of terminals and splices made of heat-resistant materials. They are noninsulated, so you can easily inspect the wire connection. Use a crimper (not included) to install wire.
    Noninsulated
    Image of Product. Front orientation. Terminal and Splice Kits. High-Temperature Terminal and Splice Kits.
    No. of
    Pieces
    Includes
    Max. Temp.,
    ° F
    Max. Voltage
    Each
    500Ring Terminals (22-10 AWG)—Noninsulated
    Spade Terminals (22-10 AWG)—Noninsulated
    Female Quick-Disconnect Terminals (12-10 AWG)—Noninsulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Noninsulated
    Butt Splices (22-10 AWG)—Noninsulated
    Metal Case
    900600V AC
    600V DC
    4174N110000000

    Tight-Hold Heat-Shrink-Insulation Terminal and Splice Kits

    Keep on hand a variety of different sized terminals and splices with the most secure, sealed connection we offer. Heat the outside and the enclosed solder melts to secure your wire. The insulation also shrinks when heated, keeping out water and contaminants.
    Ring, quick-disconnect, and spade terminals have insulation covering the barrel to prevent short circuiting with nearby wire. Butt splices have a fully insulated connection tab, so no metal is exposed when they’re mated.
    Barrel Insulated, Fully Insulated
    Image of Product. Front orientation. Terminal and Splice Kits. Tight-Hold Heat-Shrink-Insulation Terminal and Splice Kits.
    No. of
    Pieces
    Includes
    Insulation
    Material
    Heat-Shrink
    Liner Material
    Shrink
    Temp., ° F
    Max. Temp.,
    ° F
    Max. Voltage
    Each
    480Ring Terminals (22-10 AWG)—Barrel Insulated
    Spade Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-10 AWG)—Barrel Insulated
    Butt Splices (26-10 AWG)—Fully Insulated
    Metal Case
    PolyolefinAdhesive275230600V AC
    600V DC
    4173N110000000

    Set Screw Lug Assortments for Transformers

    Image of Product. Front orientation. Terminals, Ferrules, and Lugs. Set Screw Lug Assortments for Transformers.
    These assortments include the set screw lugs, nuts, and bolts needed for single-phase and three-phase dry-type transformers (transformers that dissipate heat without using liquid).
    Set screw lugs are easier to install than compression lugs, and they can be reused because you don't crush the barrel to attach the wire. They don't hold the wire as securely as compression lugs, however—use them when pulling and bending aren't a concern and you need to easily break your connection for maintenance or adjustments.
    No. of
    Pieces
    Includes
    For Screw
    Size
    For Transformer Electrical
    Phase (Power Output)
    For Wire
    Construction
    For Wire
    Material
    Terminal Material
    Max. Temp.,
    ° F
    Max. Voltage,
    V AC
    Certification
    Each
    28Set Screw Lugs (14 to 2 AWG, 6 AWG to 250 MCM)
    1/4"-20 Nuts
    1/4"-20 × 3/4" Bolts
    1/4"
    Single (15 kVA to 37 kVA)
    Three (15 kVA to 45 kVA)
    Stranded
    Aluminum, CopperTin-Plated Aluminum190600C-UL Listed, UL Listed
    4178N11000000
    44Set Screw Lugs (6 AWG to 250 MCM)
    1/4"-20 Nuts
    1/4"-20 × 3/4" Bolts
    1/4"-20 × 1 3/4" Bolts
    1/4"
    Single (50 kVA to 75 kVA)
    Three (75 kVA to 112 kVA)
    Stranded
    Aluminum, CopperTin-Plated Aluminum190600C-UL Listed, UL Listed
    4178N12000000
     

    Heat-Shrink-Insulation Terminal and Splice Kits

    For use where water and contaminants are a concern, the terminals and splices in these kits have insulation that shrinks and creates a tight seal when heated. Use a crimping tool (included with some kits) to install wire.
    Barrel Insulated, Fully Insulated
    Image of Product. Front orientation. Terminal and Splice Kits. Heat-Shrink-Insulation Terminal and Splice Kits.
    Barrel-insulated terminals have a plastic cover to prevent short-circuiting with nearby wire.
    Fully insulated terminals have a connection tab that’s completely covered, leaving no metal exposed when mated.
    Nylon/Polyolefin Insulation—Nylon/polyolefin insulation is more durable than polyolefin insulation.
    No. of
    Pieces
    Includes
    Insulation
    Material
    Heat-Shrink
    Liner Material
    Shrink
    Temp., ° F
    Max. Temp.,
    ° F
    Max. Voltage
    Certification
    Each
    80Crimping Tool
    Ring Terminals (22-10 AWG)—Barrel Insulated
    Spade Terminals (16-14 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG, not UL Listed)—Fully Insulated
    Butt Splices (22-10 AWG)—Fully Insulated
    Plastic case
    Nylon/PolyolefinAdhesive270220600V DCUL Listed
    69185K53000000
    145Crimping Tool
    Butane Heat Gun
    Ring Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Fully Insulated
    Butt Splices (22-10 AWG)—Fully Insulated
    Plastic case
    Nylon/PolyolefinAdhesive270220600V AC
    600V DC
    UL Listed
    4169N11000000
    300Ring Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Fully Insulated
    Male and Female Quick-Disconnect Terminals (22-14 AWG)—Barrel Insulated
    Butt Splices (22-8 AWG)—Fully Insulated
    Reducing Butt Splices (16-10 AWG)—Fully Insulated
    Metal Case
    Nylon/PolyolefinAdhesive190220600V AC
    600V DC
    4169N14000000
    300Ring Terminals (22-10 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-14 AWG)—Fully Insulated
    Male and Female Quick-Disconnect Terminals (22-14 AWG)—Barrel Insulated
    Butt Splices (22-8 AWG)—Fully Insulated
    Reducing Butt Splices (16-10 AWG)—Fully Insulated
    Metal Case
    PolyolefinAdhesive270220600V AC
    600V DC
    4169N13000000
    525Crimping Tool
    Cable Tie
    Cable Tie Tensioning Tool
    Butane Heat Gun
    Ring Terminals (22-10 AWG)—Barrel Insulated
    Spade Terminals (16-10 AWG)—Barrel Insulated
    Male and Female Snap-Plug Terminals (16-14 AWG)—Barrel Insulated
    Male and Female Quick-Disconnect Terminals (16-10 AWG)—Fully Insulated
    Butt Splices (22-10 AWG)—Fully Insulated
    Plastic case
    PolyolefinAdhesive270220600V AC
    600V DC
    UL Listed
    4169N12000000
    Fully Insulated
    Image of Product. Front orientation. Terminal and Splice Kits. Heat-Shrink-Insulation Terminal and Splice Kits.
    Fully insulated terminals have a connection tab that’s completely covered, leaving no metal exposed when mated.
    No. of
    Pieces
    Includes
    Insulation
    Material
    Heat-Shrink
    Liner Material
    Shrink
    Temp., ° F
    Max. Temp.,
    ° F
    Max. Voltage,
    V DC
    Certification
    Each
    50Crimping Tool
    Butt Splices (22-14 AWG)—Fully Insulated
    Plastic case
    PolyolefinAdhesive270220600UL Listed
    69185K330000000

    Cut-to-Length Low-Profile Ribbon Switches

    Customize the length of these switches by cutting them from a 50-foot roll. They're narrow and thin, so they can be hidden under carpeting or installed anywhere space is limited. Actuate them anywhere along the length of the switch. A complete system includes a strip switch and a termination kit (sold separately).
    Termination Kits with Wire Lead Connection
    Image of Product. Front orientation. Ribbon Switches. Cut-to-Length Low-Profile Ribbon Switches, Termination Kits with Wire Lead Connection.
    Wire
    Leads
    Gray
    Yellow
    No.
    of
    Lg.
    Ga.
    Includes
    Each
    Each
    218"18
    Dead End Connector, Live End Connector7379K30000007379K4000000
    Fillers
    back to top