Butt Terminals

Butt terminals are crimp-style connectors used to join or extend two stripped wires inline; use them when you need a secure, insulated or uninsulated splice for electrical wiring in automotive, marine, or general electrical projects

Choose a terminal based on wire gauge and insulation type: match the terminal's AWG range to your wire, ensure the barrel length fits the stripped conductor, and pick a terminal rated for the system voltage and current

Common materials are copper or tin-plated copper for conductivity and corrosion resistance; insulation options include vinyl (economical), nylon (durable), and heat-shrink (seals and protects against moisture)

Use a quality ratcheting or dedicated crimping tool sized for insulated or non-insulated terminals; strip the wire correctly, fully insert the conductor into the barrel, and crimp firmly at the proper die to form a secure, gas-tight connection

A good crimp has no loose strands, the wire doesn’t pull out under firm tension, and the insulation is not excessively compressed; for critical circuits verify continuity and, if applicable, insulation integrity and current carrying capability

Butt terminal packs typically range from under $10 for basic vinyl sets to (price varies)+ for larger or specialty heat-shrink and marine-grade kits; higher-cost options often use better plating, thicker barrels, or sealed heat-shrink for improved durability

Store terminals in a dry environment, organized by size and type to prevent mixing, and avoid exposing plated terminals to corrosive chemicals; for installed heat-shrink terminals, apply heat evenly to ensure a proper seal