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.

To prevent short-circuiting with nearby wire, a plastic cover insulates the barrel on these welding lugs. Tighten the set screw for a secure connection without crimping.

These prevent pullout better than other compression lugs, and they give you more options for attaching the wire. To attach with solder, heat the enclosed solder onto your stranded wire. This bonds the wire to the lug for a secure hold and a continuous, ultra-conductive metallic connection. If sharp bends and tugs aren't a concern, you can skip the soldering and use a compression tool to squeeze the barrel tightly and evenly onto the wire. Compression lugs are a step up from set screw lugs when you need a physically strong connection, though set screw lugs attach to even larger wire.

Slide these welding lugs onto cable and strike them with your hammer to create a durable connection.

Each set includes one plug and one socket. Plugs lock into sockets with a cam action that pulls the two pieces together tightly. The housing resists oil.