12 10 AWG Wire Butt Connectors (12-10 AWG / Tinned Brass)

⭐ Key Features

•PACKAGE CONTENTS: 10 PCS 12-10 AWG 4-position mechanical screw splice connectors with inspection window, 10 PCS 3:1 dual-wall adhesive heat shrink tubing (5 black, 5 red), 44 PCS slotted drive set screws and 44 PCS Allen drive set screws. Rated for 600V. Suitable for solid and stranded copper wires. Features two types of set screws: slotted and Allen drives, to meet diverse on-site assembly needs and avoid frequent tool changes for improved working efficiency. When used with the included heat shrink tubing, the connectors form a firm and insulated seal. The adhesive-lined structure creates a hermetic seal, offering excellent durability, corrosion resistance and reliable insulation.

•TINNED BRASS MATERIAL: Our mechanical screw butt splice connectors are built with high-quality brass and finished with matte tin plating. The tin layer minimizes contact resistance and suppresses galvanic corrosion, shielding components from oxidation to preserve stable conductivity and enhanced anti-corrosion performance. With exceptional hardness and tensile strength, the connectors resist rust and structural damage under harsh operating environments. Featuring an upgraded 4-screw clamping mechanism, they firmly fasten wires to eliminate loose connections. Delivering reliable electrical and mechanical performance, they enable long-term safe use and suit diverse electrical wiring projects.

•UPGRADED PLUS WIRE CONNECTOR: Our mechanical screw butt splice connectors are upgraded to 4-screw mounting to ensure maximum pull-out force, higher stability, enhanced strength and better vibration resistance. Our upgraded wire connectors are compatible with two screw drive options: Slotted Drive and Allen Drive Set Screws. This dual-design compatibility enables flexible and reliable installation to meet diverse on-site assembly needs. Additional soldering through the central inspection hole is recommended for a safer and more secure connection. These premium connectors allow for neat, efficient and fast assembly.

•WITH INSPECTION WINDOW: Our mechanical screw butt splice connectors have an inspection window in the center for visual inspection to ensure all wires are fully inserted, also provides a solder place for tin and wire. The inspection window allows extra soldering to reinforce connections and improve pull-out resistance. For a more secure and reliable wire connection, additional soldering through the central control hole is recommended as an optional but highly effective step.

•HORSESHOE STRUCTURE DESIGN: Our mechanical screw butt splice connectors adopts an innovative horseshoe-style terminal structure. The unique shape effectively expands thread contact area and improves load-bearing thread engagement. It distributes stress evenly when fastened with bolts, greatly enhancing overall connection strength and stability. This well-engineered design prevents loosening under vibration or heavy load, delivering durable and reliable bolted connections for various electrical wiring applications.

•LONGER LENGTH BARREL: Our mechanical screw butt splice connectors feature extended barrels with 4-screw mounting for ultra-strong connections and anti-slip wire retention. The thick barrels have fine chamfers at both ends and are completely burr-free, enabling quick and easy wire insertion. Fitted with large-diameter screws, they create larger contact areas with wires to maximize pull-out force, boost mechanical strength and enhance connection security. This design ensures stable and reliable wire connections.

•PERMITS MODIFICATIONS: Our Wire Splice Kit uses mechanical screw connectors, the repair of Cable is a quick, easy and reliable process. No epoxies, tape or separate mastics are required, nor are complicated professional skills, which reduces the difficulty of electrical wiring.There is an option of removing aleady existing wires and fixing new ones on existing screwterminals ifregured in the future. The circuits can be easily modified when needed. Its reusability allows products to be used to their fullest extent and also helps save money and protect the environment.

•RECOMMENDED USE HEAT SHRINK TUBING: When using mechanical screw butt splice connectors, ensure that each wire connection can obtain the strongest, most durable, and highest-performance electrical connection, we recommend insulating your connections with 3:1 dual wall, adhesive lined heat shrink tubing. This set comes with heat shrink tubing in 5 black and 5 red pieces, which creates a firm insulated seal and provides long-term protection for wire connections. Moreover, the color-coded heat shrink helps to easily differentiate polarity, making installation hassle-free.

•EASY INSTALLATION PROCESS: The process of using mechanical screw butt splice connectors for wire connection is relatively intuitive and straightforward. No special tools are required, nor are complicated professional skills, which reduces the difficulty of electrical wiring. Screws are tightened until full connection of conductors. Simple screw-on design for quick and hassle-free installation.

•BUYER CONFIDENCE: To ensure a proper fit, always match the size and gauge of terminals, cables, and lugs. It’s important to use this product with compatible copper cables. We recommend double-checking the dimensions to confirm their accuracy before making a purchase. Your satisfaction matters to us—if there’s any issue, we want the opportunity to make it right for you. Below is everything you need to get started.

🛠️ Specifications

• Brand : MAVooPoo
• Size : 12-10 AWG
• Color : Tinned Brass
• Material : Tinned Brass
• Included components : Screw Splice Sleeves with 3:1 Heat Shrink Tube
• Item highlights : 12-10 Gauge Wire Butt Splice 10Pcs ,Tinned Brass,3:1 Heat Shrink,44 Slotted Drive,44Allen Drive Set Screw Inspection Window
• Number of items : 10
• Package quantity : 1
• Style : Mechanical Splice - Tinned Brass
• Type : ELECTRONIC_COMPONENT_TERMINAL
• Item dimensions : H: 0.2 / L: 1.4 / W: 0.2
• Package dimensions : H: 0.7 / L: 5.8 / W: 4.3 (Weight: 0.33)

📋 Product Description

LOOKING FOR PREMIUM WIRE CONNECTORS FOR ALL YOUR ELECTRICAL PROJECTS? MAVooPoo Wire Splice Kit is designed to provide a reliable, moisture proof electrical connection： No epoxies, tape or separate mastics are required. No special tools are required, nor are complicated professional skills, which reduces the difficulty of electrical wiring. Upgraded with 4-screw mounting for maximum pull-out force, improved stability, greater strength and superior vibration resistance. Inspection window in the center for visual inspection to ensure all wires are fully inserted. The inspection window allows extra soldering to reinforce connections and improve pull-out resistance. Step-by-Step Guide: Using Butt Connectors Using butt connectors requires just a few basic tools and materials. The key to a successful connection is following each step carefully to ensure a strong and secure bond between the wires. WARNING!: Turn power off before installing or removing terminal or connector. All work should be done according to appropriate electrical codes. 1. Remove 2” of jacket from your cable. 2. Strip insulation from each wire to approximately half the length of the butt connector. 3. Clean cable surface and wipe dry, approximately 4 inches per side of the splice. Lightly abrade the two clean insulation surfaces. Clean cable surface and wipe dry again. 4. Slide the enclosed long piece of heat shrink tube over one end of the wire. 5. Insert wires, one at a time, into the brass connector making sure that the wires of desired connection are in the same brass sleeve. Make sure that the wires are inserted an equal length into the brass sleeve so that the set screw can engage into the copper of each wire. 6. Tighten screws with 8 inch pounds of torque. The Inspection Window on the butt connector allows visual inspection of wire insertion depth, ensuring all wires are fully seated. Additionally, the cutout serves as a dedicated soldering access point for tinning and wire bonding. For stronger, more secure and stable connections, supplementary soldering through the central access hole is highly recommended. 7. Slide long piece of heat shrink over connection centering it with respect to the brass connector assembly. 8. Apply heat to the shrink tube with a torch or heat gun starting in the middle of the shrink tube, moving out to each end. 9. Apply heat to tube until adhesive flows out on both ends of tube. 10. Properly installed, shrink tube will be smooth and conform to the cable. Adhesive should be visible at each end of the shrink tubing. 11. Finally, inspect the connection to ensure everything is secure and functional. Start by Check the crimp with a light pull to ensure it’s secure, visually checking for exposed wires or gaps in the heat-shrink tubing. Then, use a continuity tester to confirm that the connection allows electricity to flow properly. Tips: - Avoid overheating. Please use a temperature-adjustable heat gun or small propane torch. The use of lighters is not advised. - To prevent air bubbles be sure to heatfrom the center out. Heavy-wall heat shrink tubing starts shrinking at 257 °F (125 °C), with an optimal shrink temperature range of 257 °F to 392 °F (125 °C to 200 °C). Keep your heat source moving. If tubing seems tobe scorching or getting too hot, increase the distance from the heat source. To prevent the splice from slipping, hold the splice level untilit begins to cool. - Uses adhesive-lined heat shrink and sealed splice wire connectors that prevent water intrusion, resist pressure at depth, and maintain electrical integrity over long operating periods. Heat shrink tubing without internal adhesive does not provide a true waterproof seal. A proper splice for Submersible Pump (SP) Wire or Underground Feeder (UF) Wire requires an adhesive-lined heat shrink wire connector and a complete set of right suitable tools, including a temperature-controlled heat gun, matching crimping pliers or screwdrivers. The combination of mechanical connection and adhesive sealing is what ensures long-term waterproof performance. Why do we need four screws to fasten the wires? 1. Visual check for installation You can clearly see whether wires are fully seated and all strands are properly positioned via the viewing hole, effectively avoiding incomplete insertion. 2. Confirm clamping performance It allows you to check if wires are firmly pressed by screws. This prevents virtual connection and loosening, and eliminates safety risks such as poor contact and electric arcing. 3. Simplify inspection & reduce failure risks For outdoor and underground wiring, you can check connection status rapidly without taking the connector apart, making installation and maintenance much easier. 4. Convenient soldering for reinforcement Solder can be added through the viewing hole to bind wires and terminals tightly together, greatly improving connection firmness and stability. Why do we need the middle inspection hole? 1. Visual check for installation You c