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		                             National Stock Number: 9340-01-088-0406
  Federal Supply Class: 9340
  National Item Identification Number: 010880406
  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:
 | 1661C09 ITEM 05 | 90099 | NORTHROP GRUMMAN SYSTEMS CORPORATION |  | W-050-H | 95094 | CLARK-RELIANCE LLC |   
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  Techincal Specification:
 | EDGE TYPE | FLAT UNFINISHED |  | MATERIAL DOCUMENT AND CLASSIFICATION | L-P-516,TYPE G1 FED SPEC SINGLE MATERIAL RESPONSE |  | MATERIAL TRANSPARENCY | CLEAR |  | MATERIAL | PLASTIC |  | PLY QUANTITY | 1 |  | MAXIMUM OPERATING PRESSURE | 325.0 POUNDS PER SQUARE INCH |  | OVERALL DIAMETER | 1.500 INCHES NOMINAL |  | OVERALL THICKNESS | 0.375 INCHES NOMINAL |  | STYLE DESIGNATOR | CIRCULAR |  | SURFACE FINISH | FINE FINISHED |   
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