Ring Terminals

A closed ring will not shake off a stud once it is tightened, which is why it is the default for earth bonds, battery leads and anything that vibrates. Choosing one comes down to four things.

Insulation. Non-insulated where you are sleeving or heat-shrinking yourself, or where the joint runs hot. Vinyl for general indoor wiring. Nylon where the barrel takes more abuse or needs to flex without splitting. Heat-shrinkable where the joint has to keep water out.

Seam. A brazed-seam barrel is closed and stronger under a heavy crimp; a butted seam is the standard commercial construction.

Tongue width. Narrow, standard or long — pick narrow when terminals are packed tightly on a block, long when the stud sits back from the wire.

Single or double crimp. A double crimp grips the insulation as well as the conductor, so the wire is far harder to pull out.

Every series below lists its full part-number range against wire size and stud size. If you would rather just tell us the wire size and the stud size, we will pick the part for you.