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National Stock Number:
9340-00-887-1413
Federal Supply Class:
9340
National Item Identification Number:
008871413
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:
| 10043641 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | RAY44-003 | 47695 | PPG INDUSTRIES, INC |
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Techincal Specification:
| EDGE TYPE | FLAT FINISH | | FEATURES PROVIDED | CONDUCTIVE COATING | | HEAT ABSORBING CHARACTERISTIC | HIGH LIGHT TRANSMISSION | | OVERALL DIAMETER | 17.781 INCHES MINIMUM AND 17.843 INCHES MAXIMUM | | OVERALL THICKNESS | 0.312 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-25667 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL TRANSPARENCY | CLEAR | | MATERIAL | GLASS PLATE | | PLY QUANTITY | 2 | | STYLE DESIGNATOR | CIRCULAR | | SURFACE FINISH | POLISHED | | TEMP AT MAXIMUM OPERATING PRESSURE | 120.0 CELSIUS |
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