6650-00-789-8179 RING,RETAINING,OPTICAL ELEMENT Index 4730-00-789-8181 ELBOW

National Stock Number:
9340-00-789-8180

Federal Supply Class:
9340

National Item Identification Number:
007898180

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:
249360172314BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
249366110001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
OVERALL DIAMETER3.000 INCHES NOMINAL
OVERALL THICKNESS0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM
OVERALL WIDTH0.375 INCHES NOMINAL
MATERIAL TRANSPARENCYCLEAR
MATERIALGLASS
STYLE DESIGNATORHALF ROUND


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