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		                             National Stock Number: 9340-00-767-8839
  Federal Supply Class: 9340
  National Item Identification Number: 007678839
  Description: WINDOW,OBSERVATION
  Detail: A TRANSPARENT ITEM OF A PREDETERMINED SIZE THAT PERMITS UNOBSTRUCTED AND UNDISTORTED VIEW OF A DESIRED AREA. IT MAY INCLUDE A FRAME, HAVE REFERENCE MARKINGS, GRID LINES AND MAY BE HEAT STRENGTHENED AND/OR TINTED. IT IS GENERALLY USED WHERE SAFETY, SECURITY, AND/OR THE RESTRICTION OF FOREIGN MATTER ARE REQUIRED, SUCH AS THE VISUAL EXAMINATION OF THE INSIDE OF PRESSURIZED TANKS, LIQUID SIGHTS, CONTROLLED LIQUID FLOW, AND INSPECTION OF EQUIPMENT ENCLOSED IN A HOUSING. SEE WINDOW (AS MODIFIED); SCALE, CATHODE RAY TUBE; SCALE, PLOTTING; WINDOW, METAL; WINDOW, WOOD; AND WINDOW PANEL, AIRCRAFT.
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  Manufacturer Information:
 | 2-43052-1 | 0JRC1 | NORTHROP GRUMMAN TECHNICAL SERVICES, INC. |  | 2-43052-1 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION |   
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  Techincal Specification:
 | EDGE TYPE | FLAT FINISH |  | MATERIAL DOCUMENT AND CLASSIFICATION | DD-G-541 FED SPEC SINGLE MATERIAL RESPONSE |  | MATERIAL TRANSPARENCY | CLEAR |  | MATERIAL | GLASS |  | OVERALL DIAMETER | 3.141 INCHES NOMINAL |  | OVERALL THICKNESS | 0.167 INCHES NOMINAL |  | STYLE DESIGNATOR | CIRCULAR |   
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