Surface treatment is black crackle.
A signaling apparatus which operates electromagnetically and serves to indicate visually, or visually and audibly, whether a current is flowing, has flowed, or has changed direction of flow in one or more circuits. It is usually employed in connection with alarms, electric bells, or buzzers. See also alarm (as modified).
Classification: Parts of electric sound or visual signaling apparatus other than printed circuit assemblies, nesoi
NSN 6240-01-425-1939
NSN 6240-00-013-4764
NSN 6320-01-493-4472
NSN 5990-01-097-4721
NSN 6240-01-257-7014
NSN 5895-00-146-1809
NSN 5999-01-572-6985
NSN 6220-01-345-2845
NSN 5930-01-356-9492
NSN 6110-00-479-0403
NSN 5945-00-308-2612
NSN 4140-00-195-7336