Locking pin bulb (10 ps) De Dietrich 7853940

The locking pin bulb is a small but vital component used to secure bulbs or lamps in boiler and burner indicator lights. It locks the bulb in place, preventing vibration or accidental removal during operation. This pin is typically found in control panels or status displays on heating equipment. Replacing a worn locking pin ensures that indicator lights remain functional, aiding in system monitoring and troubleshooting. A simple yet essential part for maintenance.