Sta-Kon RB2254 INSNYL LKG FORK TRM 18-14 No10 BLUE

The RB2254 is sized for 18 to 14 AWG stranded copper wire, which is the blue color-code range on insulated terminals. Pair it with the blue die or nest on your crimp tool. Anything heavier than 14 AWG needs the yellow 12-10 AWG size instead, and 22-16 AWG wire belongs in a red terminal.

It is built for a No. 10 screw or stud. The fork slips under a partially loosened No. 10 terminal screw rather than requiring the screw to come all the way out, which is why electricians reach for spades on crowded terminal strips and control panels.

Yes. The Sta-Kon RB2254 carries a 600 V rating, so it covers 120, 208, 240, 277 and 480 V control and power terminations within that limit. It is also UL recognized under file E9809, which is what an inspector or a spec writer will want to see on a panel build.

The tongue has upturned tangs at the fork tips that catch under the screw head, so the terminal resists backing out sideways once the screw is tightened. That is the practical difference from a plain spade: a standard fork can slide free if the screw loosens from vibration, while the locking style stays captive. Useful on motor controls, HVAC boards and anything that vibrates in service.

Pick the fork when you need to install or service without fully removing the screw, as on dense terminal strips, relay bases and contactor terminals. Pick a ring when the connection is permanent, high-vibration, or a spec calls for a captive termination that cannot pull out sideways at all. The locking fork style of the RB2254 splits the difference, giving quick service access with tangs that hold under the screw head, but a true ring tongue is still the choice where a code or customer spec names one.

Copper, with a nylon insulating sleeve over it. Copper barrels are for copper conductors only, so do not crimp this onto aluminum wire, that requires a terminal specifically marked AL or AL9CU.

Nylon takes abuse better than vinyl. It resists cut-through and abrasion when wires are pulled through a raceway or bundled tight, and it holds up to higher operating temperatures and solvents in panel and engine-compartment work. On the RB2254 the nylon sleeve also stays rigid enough to support the wire where it leaves the barrel, which reduces flex fatigue at the crimp.

Country of origin on the RB2254 is the United States, which is what procurement officers on federal, military and public-infrastructure jobs need documented. Confirm the specific clause your contract cites, since Buy American and BAA thresholds differ by program.

Order Sta-Kon RB2254. One part number covers all 18-14 AWG copper wire going to No. 10 screws at up to 600 V, so stocking it alongside a red 22-16 and a yellow 12-10 size in the same tongue style gives an MRO crib most of its fork terminal coverage.