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National Stock Number:
9340-01-111-3993
Federal Supply Class:
9340
National Item Identification Number:
011113993
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:
| 341 | 51857 | ERNST JOHN C & CO INC. |
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Techincal Specification:
| STYLE DESIGNATOR | CIRCULAR | | OVERALL DIAMETER | 1.875 INCHES NOMINAL | | OVERALL THICKNESS | 1.250 INCHES NOMINAL | | MATERIAL | GLASS BOROSILICATE | | MATERIAL TRANSPARENCY | CLEAR | | EDGE TYPE | FLAT FINISH | | PLY QUANTITY | 1 | | TEMP AT MAXIMUM OPERATING PRESSURE | 250.0 DEG FAHRENHEIT | | MAXIMUM OPERATING PRESSURE | 17.0 POUNDS PER SQUARE INCH | | CUBIC MEASURE | 2.930 CUBIC INCHES | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 51857 | | DESIGN CONTROL REFERENCE | 341 |
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