I am looking to source some led lamps. They need to be small, about 1 x 2 mm and they need to be 365nm. I am trying to replace the white LEDs in a borescope 365nm UV bulbs but the entire assembly has to fit into a 1/2" hole.

The smallest I can find are already on a board. I need to find loose ones if possible. Would prefer 3v as that is what is currently installed.