Sta-Kon RA863UF NYLON RING,22-18,8BOLT,45 DEG BEND

It takes 22-16 AWG stranded or solid copper wire. That covers the small control, signal, thermostat and low-voltage wiring an electrician or controls tech runs to terminal blocks. For 14-12 AWG or larger you want the next barrel size up, not this one.

The 45 degree bend in the RA863UF angles the tongue away from the wire barrel, so the conductor leaves the stud at an angle rather than straight out. That is what you want in tight panels and junction boxes where a straight ring would force a sharp bend in the wire right at the crimp, or where the stud faces a wall or cover. On an open terminal strip with room behind it, a straight ring terminal is the simpler choice.

It is a crimp-on terminal, not a solder or screw type, so it needs a controlled-cycle crimp tool set for insulated terminals in the 22-16 AWG range. Match the tool's red nest or die to the terminal, strip the wire so the conductor fills the barrel without copper showing past the insulation grip, and crimp once. Pliers will not give you a gas-tight connection on a barrel this small.

Order by manufacturer part number RA863UF from Sta-Kon. It is a nylon insulated ring terminal, red, 22-16 AWG, #8 stud, with the 45 degree tongue bend. Country of origin is the United States.

Yes, and a ring is the right choice for it. Unlike a spade or fork terminal, the closed ring cannot vibrate or pull off a loosened #8 ground screw without the screw being fully removed, which is why equipment grounds and vibration-prone connections get rings. The 45 degree bend helps where the ground screw sits against a panel wall and a straight tongue would kink the conductor.

Red is the standard color code for the small wire range, and that matches this terminal's 22-16 AWG capacity. On a job where you are sorting terminals by hand, red tells you at a glance it is the small-gauge barrel, versus blue for the mid range and yellow for the large. The insulation here is nylon.

The RA863UF uses a nylon insulating sleeve rather than vinyl. Nylon is the tougher of the two, it resists abrasion and splitting when the terminal is pushed through a bundle or flexed at the crimp, and it holds up better to heat and to solvents and oils found in mechanical rooms and equipment enclosures. Vinyl is the cheaper option for clean, static indoor work.