Sta-Kon B133UF NON-INS RING 18-14 NO6 STUD 45DEG

The B133UF accepts 18 to 14 AWG stranded or solid copper conductor. That covers the common control, fixture whip, and low-voltage runs an electrician terminates on a 16 or 14 gauge circuit. Below 18 AWG the barrel won't grip reliably, and 12 AWG won't enter it, so step up to a larger barrel for those.

The 45 degree bend between the barrel and the tongue lets the wire approach a stud from the side rather than straight on. That matters in tight gutters, crowded terminal strips, and panel wireways where a flat tongue would force a sharp bend in the conductor right at the crimp. If you have straight-line room to the stud, a standard flat ring terminal is the simpler pick.

It is a non-insulated terminal, bare copper with no nylon or vinyl sleeve. That means the crimp barrel is exposed, so in anything with adjacent live parts or flexing you should sleeve it with heat shrink or use an insulated equivalent. Non-insulated is what you want where heat, solvent exposure, or a very tight stack of terminals rules out a plastic sleeve.

The body is copper, which makes it a copper-only terminal. Putting aluminum conductor into a copper barrel sets up a dissimilar-metal joint that corrodes and loosens, so use a terminal rated AL/CU for aluminum. For copper conductor in the 18 to 14 AWG range it's a straight fit.

Yes. Non-insulated barrels crimp with a bare-terminal die, not the color-coded insulated nests on a standard red/blue/yellow crimper. Use a tool with an 18-14 AWG non-insulated station so the indent lands on the barrel wall. An insulated-die crimper will deform the open barrel instead of compressing it.

Use the ring. A ring like the B133UF is a closed tongue, so once the No. 6 screw is torqued down the terminal cannot back out under vibration, which is why rings are standard on grounding points and motor control connections. A fork or spade slides out sideways and is only worth it when you need to service the connection often without fully removing the screw.

Country of origin is the United States. That is the detail institutional and government buyers usually need for domestic-sourcing documentation on a bid package.