9340-01-225-0045 WINDOW,OBSERVATION Index 4820-01-225-0047 SEAT,VALVE

National Stock Number:
9340-01-225-0046

Federal Supply Class:
9340

National Item Identification Number:
012250046

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.


Manufacturer Information:
297-13583-211530LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS
297-13583-246859LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN GOVERNMENT


Techincal Specification:
EDGE TYPEBEVELED
MATERIAL DOCUMENT AND CLASSIFICATIONDD-G-451 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL TRANSPARENCYTRANSLUCENT
MATERIALGLASS SAFETY
PLY QUANTITY2
OVERALL LENGTH12.910 INCHES MINIMUM AND 12.970 INCHES MAXIMUM
OVERALL THICKNESS0.250 INCHES NOMINAL
OVERALL WIDTH10.040 INCHES MINIMUM AND 10.100 INCHES MAXIMUM
STYLE DESIGNATORSQUARE CORNERS
SURFACE FINISHPOLISHED


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