NSN 1240-01-497-4320

Part Details | OPTICAL INSTRUMENT WINDOW

1240-01-497-4320 A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

Alternate Parts: 5612975, 1240-01-497-4320, 01-497-4320, 1240014974320, 014974320

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12MAY 20, 200201-497-432010908 ( WINDOW, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-497-4320
Part Number Cage Code Manufacturer
561297553711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 1240-01-497-4320
Characteristic Specifications
POLISHED PERIPHERY NOT PROVIDED
DIAMETER41.9 MILLIMETERS MINIMUM AND 42.0 MILLIMETERS MAXIMUM
THICKNESS8.9 MILLIMETERS MINIMUM AND 9.0 MILLIMETERS MAXIMUM
SPECIAL FEATURESCONVEX RADIUS IS 55.4 MM MAX
END ITEM IDENTIFICATIONFC33 ELECTRICAL AND ELECTRONIC ADAPTER ASSY PN 5612561; PERISCOPE
PART NAME ASSIGNED BY CONTROLLING AGENCYEYEPIECE,EL-1