The Amphenol 86303065NLF is a machined power socket contact from the 86303 series, designed for 16 AWG wire with a solder cup termination.
Solder cup termination means you tin the stripped 16 AWG wire and hand-solder it into the cup — no crimp tool required. The machined body gives a consistent solder joint, but the cup size is fixed for 16 AWG; don't try to force a thinner gauge without a ferrule or the joint will be loose. The gold plating on the contact body itself doesn't extend into the solder cup area — that's bare brass for the solder to wet to.