National Item Identification Number
National Stock Number
Federal Supply Class
An item specifically designed to be placed partially or completely around an electron tube for the purpose of shielding against electrical or mechanical interference or physical damage. May include mounting facilities. See also COVER (as modified); HOUSING (as modified) and VISOR (as modified).
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
EIA ELECTRON TUBE ENVELOPE ACCOMMODATED