666903LM is a four-pole toggle switch designed for military applications, featuring an ON-OFF-MOM circuit configuration. It incorporates a 15/32-32UNS threaded bushing for secure panel mounting and screw terminals for reliable electrical connections. The switch features a nickel plated bushing with bright chrome plated actuator and top nut (LM finish). With dimensions including a height of approximately 17.50 mm (0.689 in) and terminal spacing of 11.00 mm (0.433 in), this switch is suitable for demanding military and industrial control applications requiring robust multi-pole switching capabilities.