LED 4mm Yellow

We pickep up a few thousand scrap LEDs from a supplier. Mixed in the assortment we got these.

These LEDs are great, they are bright yellow. The problem is they have a nob on the leads that stop them from sliding into our board. The LEDs will not mount flat with the circuit board, they end up standing 1/16 inch above the board.

The LEDs are tapered, they are 3mm at the top, the base is 4mm and slightly oval. They do not have a flange.