Sta-Kon C36U 90DEG RNG TRM 10-12 AWG NO10 TIN PL

The C36U is built for 12-10 AWG stranded copper wire. Anything smaller than 12 AWG will not hold in the barrel under a proper crimp, and 8 AWG will not enter it, so match the gauge before you crimp.

The C36U is a 90 degree (flag style) ring terminal, meaning the wire exits at a right angle to the ring. That is what you want when the stud faces out of a panel wall or enclosure back and a straight terminal would force a sharp bend in the conductor or push the wire into the cover. For a stud you are approaching head on with slack to spare, a straight ring terminal is the simpler part.

No. It is a bare, non-insulated terminal, so there is no color-coded sleeve to identify the wire range and no dielectric barrier at the barrel. If the connection sits where it could be touched or shorted against an adjacent stud, plan on heat shrink or a boot over the crimp.

Copper, tin plated. That makes it a copper-only connector, so use it on stranded copper conductors. Tin plating helps resist oxidation at the ring face, which matters on ground and bonding screws that get checked years later.

It is a non-insulated barrel in the 12-10 AWG range, so it needs a crimp die for bare terminals at that gauge, not the insulated color-coded nest on a general purpose tool. Plated-barrel non-insulated terminals are crimped with the indenter die matched to the wire size; an insulated-style die will not form the barrel correctly.

It is manufactured in the United States, which is the detail institutional and government buyers usually need confirmed for domestic sourcing requirements on electrical materials.