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National Stock Number:
9340-00-273-9568
Federal Supply Class:
9340
National Item Identification Number:
002739568
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:
| 846456 | 56232 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| EDGE TYPE | FLAT FINISH | | OVERALL DIAMETER | 4.000 INCHES NOMINAL | | OVERALL THICKNESS | 0.375 INCHES NOMINAL | | MATERIAL TRANSPARENCY | CLEAR | | MATERIAL | GLASS | | SPECIAL FEATURES | 0.375 IN 45.0 DEG BEVEL ON 1 SIDE-3.625 IN DIA FACE ON BEVELED SIDE | | PLY QUANTITY | 1 | | STYLE DESIGNATOR | CIRCULAR |
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