4140-00-493-9644 FAN,TUBEAXIAL Index 6220-00-493-9649 INACTIVE

National Stock Number:
9340-00-493-9647

Federal Supply Class:
9340

National Item Identification Number:
004939647

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:
851-753509647AQUA-CHEM INC.
851-75350EXU3AQUA-CHEM, INC.


Techincal Specification:
EDGE TYPEFLAT FINISH
OVERALL DIAMETER8.375 INCHES NOMINAL
OVERALL THICKNESS0.750 INCHES NOMINAL
MATERIAL TRANSPARENCYCLEAR
MATERIALGLASS
PLY QUANTITY1
STYLE DESIGNATORCIRCULAR
SURFACE FINISHFINE FINISHED


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