NSN 1240-00-171-4165

Part Details | OPTICAL INSTRUMENT WINDOW

1240-00-171-4165 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: 202369PC6, 1240-00-171-4165, 00-171-4165, 1240001714165, 001714165

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196300-171-416510908 ( WINDOW, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-171-4165
Part Number Cage Code Manufacturer
202369PC610001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 1240-00-171-4165
Characteristic Specifications
REFRACTION INDEX1.5171 NOMINAL
POLISHED SURFACE BOTH
POLISHED PERIPHERY NOT PROVIDED
DIAMETER45.000 MILLIMETERS NOMINAL
THICKNESS3.000 MILLIMETERS NOMINAL
BEVEL ANGLE IN DEG45.000 NOMINAL
BEVEL DEPTH1.000 MILLIMETERS NOMINAL
FSC APPLICATION DATATELESCOPE MK 63 MOD 0