9330-01-297-0520 WINDOW,OBSERVATION Index 4140-01-297-0522 HOUSING,VANEAXIAL FAN

National Stock Number:
9330-01-297-0521

Federal Supply Class:
9330

National Item Identification Number:
012970521

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:
B108A6996696CANBERRA INDUSTRIES INC.


Techincal Specification:
FIRST CORNER RADIUS0.020 INCHES NOMINAL
FOURTH CORNER RADIUS0.020 INCHES NOMINAL
OVERALL LENGTH1.093 INCHES NOMINAL
OVERALL THICKNESS0.050 INCHES MINIMUM AND 0.074 INCHES MAXIMUM
OVERALL WIDTH0.469 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-5425 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIAL TRANSPARENCYCLEAR
MATERIALPLASTIC ACRYLIC
SECOND CORNER RADIUS0.020 INCHES NOMINAL
SPECIAL FEATURESMASKED OR INTERLEAVED FOR PROTECTION OF FACE SURFACE
STYLE DESIGNATORROUNDED CORNERS
THIRD CORNER RADIUS0.020 INCHES NOMINAL


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