Sta-Kon RB717-200 EXP INS VINYL RNG TERM, 18-14, 1/4

The RB717-200 takes 18-14 AWG stranded or solid copper wire. The blue vinyl insulation is the standard color code for that range, so on a panel where you have red (22-16) and yellow (12-10) terminals mixed in, blue tells you at a glance you are on the 18-14 run.

Yes. The RB717-200 is built for a 1/4 inch stud, so it drops over a 1/4-20 machine screw, terminal block stud, or grounding screw of that size. If your lug stud is #10 or 5/16, you need a different ring size, not this one.

The Sta-Kon vinyl insulated ring terminal carries a 600 V rating, which covers typical commercial control panel, motor starter, and lighting branch circuit terminations. It is also UL recognized under file E9809.

A ring terminal like the RB717-200 is the closed-barrel choice: the screw must come all the way out to install it, but once it is torqued down the connection cannot vibrate off the stud. Spade or fork terminals slide in from the side without removing the screw, which is faster for service work but can back out under vibration. For motor connections, grounding points, and anything on equipment that shakes, use the ring.

The barrel is copper, so it is for use on copper conductors only. Aluminum building wire needs a terminal specifically marked AL or AL/CU; crimping aluminum into a copper-only barrel sets up a dissimilar-metal joint that corrodes and loosens.

Crimp it with a tool matched to insulated terminals in the 18-14 AWG range, color coded blue on most die sets. A ratcheting insulated-terminal crimper compresses the barrel through the vinyl without splitting it. Generic plier-style cutters crush the insulation and give you a joint that will not hold the UL rating this terminal is listed under.

Country of origin on the Sta-Kon RB717-200 is the United States. That matters on federal, municipal, and some institutional jobs where domestic sourcing is written into the spec.

Yes, within their range. A copper ring terminal on 18-14 AWG with a 1/4 inch ring will land a small equipment grounding conductor or bonding jumper on a 1/4 inch green grounding screw, and the closed ring keeps the connection captive on the stud. For larger grounding conductors you move up to a terminal sized for that gauge.