NSN 1240-00-171-4182

Part Details | OPTICAL INSTRUMENT WINDOW

1240-00-171-4182 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: 176221PC3, 1240-00-171-4182, 00-171-4182, 1240001714182, 001714182

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196300-171-418210908 ( WINDOW, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-171-4182
Part Number Cage Code Manufacturer
176221PC310001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 1240-00-171-4182
Characteristic Specifications
REFRACTION INDEX1.5230 NOMINAL
POLISHED SURFACE BOTH
REFLECTION REDUCING SURFACE BOTH
POLISHED PERIPHERY NOT PROVIDED
WIDTH29.500 MILLIMETERS NOMINAL
LENGTH56.800 MILLIMETERS NOMINAL
THICKNESS3.000 MILLIMETERS NOMINAL
SPECIAL FEATURES4 CORNERS 4.0 MM /0.1575 IN./ RADIUS