Sta-Kon RB1123M INSNYL FRK TRM 18-14 No8 BLUE MYLAR

The RB1123M takes 18 to 14 AWG stranded or solid conductor. That is the blue insulation range, which is the standard color code for 16-14 AWG class terminals, so if you pull a blue barrel off a reel you are in the right size band. Anything heavier than 14 AWG will not seat in the barrel, and 12-10 AWG needs a yellow-insulated terminal instead.

Yes. The RB1123M is sized for a No. 8 stud or screw, so it slips under a loosened #8 terminal screw on a block, breaker, or control device without removing the screw entirely. That is the main reason to pick a fork (spade) tongue over a ring tongue on panel and control work.

It carries UL file E9809. If your inspector or spec sheet requires UL-recognized terminations on the control wiring, that file number is what you cite on the submittal.

A fork tongue like the RB1123M goes on and off a No. 8 screw without pulling the screw out, which saves real time on dense terminal strips and on service calls where you are swapping a device. A ring terminal is captive, so it cannot vibrate off the stud if the screw backs out, which is why ring is preferred on motor leads, grounding, and high-vibration equipment. For stationary control and instrumentation terminations, fork is the normal choice.

The barrel insulation is nylon. Nylon-insulated terminals run at a higher temperature rating and resist abrasion and crushing better than vinyl, which is why they get specified for panel interiors and for pulls through conduit bodies where a vinyl sleeve would split. The blue sleeve also carries a Mylar insert at the barrel.

Sta-Kon insulated terminals are crimped with an insulated-barrel crimp tool matched to the color-coded range, so the blue nest on the tool is the one you use for this 18-14 AWG terminal. A generic uninsulated-lug die will crush the nylon sleeve and give you an uncertified connection. No hardware ships with the terminal itself; the mounting screw comes from the device or terminal block.

Sta-Kon RB1123M is the designation: nylon insulated fork tongue, 18-14 AWG, No. 8 stud, blue. One model, no finish or size options to specify beyond the part number itself.

Country of origin on the RB1123M is the United States. That matters on federal, municipal, and some institutional work where domestic-origin documentation is part of the submittal package.