4140-01-303-9489 GUARD,FAN IMPELLER Index 5999-01-303-9491 PANEL,RADIO FREQUENCY-ELECTROMAG

National Stock Number:
5999-01-303-9490

Federal Supply Class:
5999

National Item Identification Number:
013039490

Description:
PANEL,RADIO FREQUENCY-ELECTROMAG

Detail:
A REPLACEABLE DEVICE IN PANEL FORM DESIGNED TO ELIMINATE RADIO FREQUENCY AND ELECTROMAGNETIC INTERFERENCE FROM THE AIR PASSING THROUGH IT. THE ELIMINATION OF INTERFERENCE IS ACCOMPLISHED BY REFLECTION AND/OR ABSORPTION OF RADIATED ELECTROMAGNETIC ENERGY BY MEDIA CONSTRUCTED OF ELECTRICALLY CONDUCTIVE MATERIAL, IN HONEYCOMB OR LOUVERED FORM CONFINED IN A FRAME, WITH ELECTRICALLY CONDUCTIVE GASKETING (OR SELF-GASKETING FEATURE) TO PROVIDE ELECTRICAL CONTACT WITH THE CABINET ON WHICH IT IS INSTALLED OR MOUNTED. IT MAY BE USED IN AIR VENTILATING OR HEATING DUCTS, LIGHTING APERTURE AND THE LIKE. IT MAY HAVE A FILTER FOR DUST PROTECTION. IT MAY INCLUDE A DRIP-PROOF DESIGN FEATURE. EXCLUDES ELECTRICAL FILTERING DEVICES WHICH EMPLOY CAPACITOR, RESISTOR AND COIL COMPONENTS TO ELIMINATE OR SUPPRESS CONDUCTED ELECTROMAGNETIC ENERGY. EXCLUDES SHIELD,TEST.


Manufacturer Information:
60-9095207700TECHNICAL WIRE PRODUCTS LLC DBA TWP
858214-000106481NORTHROP GRUMMAN SYSTEMS CORPORATION
858214-000113973LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION


Techincal Specification:
SPECIAL FEATURESDESIGN TYPE:REUSABLE;MATERIAL:FILTERING MEDIUM,ALUMINUM ALLOY MIL-C-7438;FRAME,ALUMINUM ALLOY QQ-A-200/9,ALLOY 6063-T1;SEAL,STEEL ASTM B-520 AND RUBBER CHLOROPRENE MIL-R-6130,TYPE 2,GRADE A,COND MEDIUM;SURFACE TREATMENT:FILTERING MEDIUM,CHROMATE MIL-C-5541,CLASS 1A;FRAME,CHROMATE MIL-C-5541,CLASS 1A;SEAL,TIN PLATED ASTM B-520 AND COPPER


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