Sta-Kon F9018 NON-INS FERRULE 12, 4 MM2, LG .709

The F9018 wire ferrule is sized for 12 AWG conductor, which corresponds to the 4 mm2 metric size called out in its description. Stranded 12 AWG is what it is meant to crimp onto before the conductor goes into a terminal block or a screw clamp.

Non-insulated. The F9018 is a bare copper sleeve with no plastic collar, so there is no color-coded insulation to identify the size in a panel and no strain relief over the wire jacket. Use it where the terminal enclosure or the gauge of the conductor already handles that, or pick an insulated ferrule if you want the collar.

A ferrule gathers the strands into one solid pin so nothing frays out of a screw clamp or spring terminal, and the clamp bears on the copper sleeve rather than crushing individual strands. On terminal blocks, control panels, drives and contactors that is standard practice, and some terminals specifically call for a ferrule on fine-strand wire. The F9018 does that job for 12 AWG / 4 mm2 conductor.

It is copper, metallic finish, with no insulating collar. Copper ferrules are crimped with a four-indent or trapezoidal ferrule crimper sized to the 4 mm2 / 12 AWG barrel; a general purpose insulated-terminal plier will not form the sleeve correctly.

Order it as Sta-Kon F9018. That is the manufacturer part number for the non-insulated 12 AWG / 4 mm2 ferrule with the .709 inch barrel, and it is a single configuration, so there are no finish or length options to specify.

Germany. Country of origin matters on government and institutional orders where trade-agreement or domestic-preference documentation is required, so it is worth noting on the submittal.