9340-00-641-3987 WINDOW,OBSERVATION Index 5330-00-641-3993 O-RING

National Stock Number:
9340-00-641-3988

Federal Supply Class:
9340

National Item Identification Number:
006413988

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:
118847210001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
OVERALL DIAMETER4.919 INCHES MINIMUM AND 5.031 INCHES MAXIMUM
OVERALL THICKNESS0.245 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-3787,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS
SPECIAL FEATURESPART OF STABLE ELEMENT,MK16 MOD 0.1
STYLE DESIGNATORCIRCULAR


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