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 7035-01-571-8784
NSN 6145-00-243-7234
NSN 6145-01-364-0055
NSN 6130-01-641-7201
NSN 6685-00-492-6363
NSN 6145-00-078-9917
NSN 5855-01-421-1440
NSN 5990-00-070-3006
NSN 5965-00-811-3793
NSN 5895-00-550-1113
NSN 6105-00-503-5100
NSN 6610-00-973-8559