5330-00-360-9408 SEAL Index 6650-00-360-9443 RETICLE,OPTICAL INSTRUMENT

National Stock Number:
9340-00-360-9420

Federal Supply Class:
9340

National Item Identification Number:
003609420

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:
1055993219200US ARMY ARDEC RDECOM


Techincal Specification:
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-174,GRADE C,TYPE 586-460 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-G-174,GRADE C,TYPE 523-586 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIAL TRANSPARENCYCLEAR
MATERIALGLASS
OVERALL DIAMETER2.746 INCHES MINIMUM AND 2.752 INCHES MAXIMUM
OVERALL THICKNESS0.180 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
STYLE DESIGNATORCIRCULAR


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