Sta-Kon F4009 INS PP OLD DIN FERRULE No22 0.34MM2

The F4009 is sized for 22 AWG conductor, which is the 0.34 mm2 metric equivalent called out in its description. Strip your stranded conductor to the barrel length, insert the full bundle into the copper barrel, and crimp with a ferrule crimper. Undersized wire in the barrel will not hold a proper crimp, so match the conductor to the 22 AWG rating rather than forcing a larger gauge in.

Pink is the color code of the polypropylene insulating collar on the F4009, and on DIN-coded ferrules the collar color identifies the conductor size at a glance. On this part pink corresponds to 22 AWG / 0.34 mm2. That matters on a panel build or control cabinet where an inspector or the next tech needs to confirm the right ferrule went on the right conductor without pulling wire out of a terminal block.

A ferrule is what keeps stranded conductor from splaying or losing strands under a screw terminal, and many European style terminal blocks and DIN rail devices expect one. The F4009 crimps a copper barrel over 22 AWG stranded conductor and the polypropylene collar gives the strain relief and insulation at the entry. For solid conductor you do not need one. If you are terminating to a ring or fork screw post instead of a cage clamp, use a terminal lug rather than a ferrule.

Order it by manufacturer part number F4009 under the Sta-Kon brand. That single part number covers the 22 AWG / 0.34 mm2 pink insulated version, so there is no additional size or color option to specify. It is manufactured in Germany.