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National Stock Number:
9340-00-872-0913
Federal Supply Class:
9340
National Item Identification Number:
008720913
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:
| 10953911 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| FIRST CORNER RADIUS | 0.187 INCHES NOMINAL | | FOURTH CORNER RADIUS | 0.187 INCHES NOMINAL | | MATERIAL TRANSPARENCY | CLEAR | | MATERIAL | PLASTIC METHYL METHACRYLATE | | OVERALL LENGTH | 3.500 INCHES NOMINAL | | OVERALL THICKNESS | 0.060 INCHES NOMINAL | | OVERALL WIDTH | 1.750 INCHES NOMINAL | | PLY QUANTITY | 1 | | SECOND CORNER RADIUS | 0.187 INCHES NOMINAL | | SPECIAL MARKINGS | LINES ENGRAVED PERPENDICULAR TO LENGTH,FIRST LINE 0.562IN. FROM LEFT END,SECOND LINE 2.187IN. FROM FIRST LINE AND THIRD LINE PARALLEL TO LENGTH0.875IN. FROM TOP | | STYLE DESIGNATOR | ROUNDED CORNERS | | SURFACE FINISH | FINE FINISHED | | THIRD CORNER RADIUS | 0.187 INCHES NOMINAL |
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