NSN 1240-00-155-1431

Part Details | OPTICAL INSTRUMENT WINDOW

1240-00-155-1431 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: 278423PC3, 1240-00-155-1431, 00-155-1431, 1240001551431, 001551431

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196300-155-143110908 ( WINDOW, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-155-1431
Part Number Cage Code Manufacturer
278423PC310001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 1240-00-155-1431
Characteristic Specifications
REFRACTION INDEX1.5170 NOMINAL
POLISHED SURFACE BOTH
POLISHED PERIPHERY NOT PROVIDED
DIAMETER60.000 MILLIMETERS NOMINAL
THICKNESS2.000 MILLIMETERS NOMINAL
BEVEL ANGLE IN DEG45.000 NOMINAL
BEVEL DEPTH0.700 MILLIMETERS NOMINAL
FSC APPLICATION DATARANGEFINDER,FIRE CONTROL