Sta-Kon RBC873Y INS NYL RING TERM 14-12 HVDTY No10

The RBC873Y is sized for 14 to 12 AWG stranded or solid copper wire. The yellow nylon insulation is the color code that goes with that range on Sta-Kon terminals, so if you are pulling 16 or 10 AWG, this is the wrong barrel and you need the adjacent size.

Yes. The RBC873Y ring is made for a No. 10 stud or screw, so it drops over a 10-32 or 10-24 terminal screw on a panel, lug, or ground bus. For 1/4-20 hardware you want the larger ring size in the same 14-12 family.

The RBC873Y is a heavy-duty nylon insulated ring terminal, meaning a thicker barrel wall and a nylon sleeve rather than vinyl. Nylon takes abrasion and higher heat better than vinyl and resists cracking when the terminal is flexed in a wire bundle, which is why it gets specified for motor leads, control cabinets, and vibration-prone equipment. For light-duty, low-vibration work a standard vinyl insulated ring is enough.

A ring terminal like the RBC873Y has a closed tongue, so it cannot vibrate off a stud even if the screw loosens. That is why ring terminals are required on grounding connections and on anything that moves. A fork or spade terminal slides out from under a loosened screw, but it lets you drop the wire in without pulling the screw all the way out, which is why panel shops use them for dense terminal strips that get serviced often.

Yes, use a controlled-cycle crimper with the die for 14-12 AWG insulated terminals, matched to the yellow color code. Pliers or an uncalibrated crimper will not give a crimp that holds the UL recognition; the nylon sleeve has to be compressed with the barrel for the termination to pull-test correctly.

Yes, country of origin is the United States. That matters if you are filling a government or institutional order with domestic-content language in it.