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National Stock Number:
9340-01-127-1280
Federal Supply Class:
9340
National Item Identification Number:
011271280
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:
| 13040147 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| EDGE TYPE | BEVELED | | ENVIRONMENTAL PROTECTION | MILDEW RESISTANT AND SALT WATER RESISTANT | | FEATURES PROVIDED | LIGHT REDUCING | | FRAGILITY FACTOR | MODERATELY DELICATE | | FSC APPLICATION DATA | FIRE CONTROL DESIGNATING AND INDICATING EQUIPMENT (NON-AIRBORNE) | | OVERALL DIAMETER | 1.290 INCHES MINIMUM AND 1.300 INCHES MAXIMUM | | OVERALL THICKNESS | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,TYPE 517-642,CLASS 1,GRADE B,FINE ANNEALED MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL TRANSPARENCY | CLEAR | | MATERIAL | GLASS | | STYLE DESIGNATOR | CIRCULAR | | SURFACE FINISH | POLISHED |
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