NSN 1240-00-171-4178
Part Details | OPTICAL INSTRUMENT WINDOW
1240-00-171-4178 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: 1040155, 52476, 1240-00-171-4178, 00-171-4178, 1240001714178, 001714178
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
12 | JAN 01, 1963 | 00-171-4178 | 10908 ( WINDOW, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-171-4178
Part Number | Cage Code | Manufacturer |
---|---|---|
1040155 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
52476 | 21587 | OPTICAL TECHNOLOGY DEVICES INC |
Technical Data | NSN 1240-00-171-4178
Characteristic | Specifications |
---|---|
REFRACTION INDEX | 1.5170 NOMINAL |
DISPERSION | 64.5 ANGSTROMS NOMINAL |
POLISHED SURFACE | BOTH |
REFLECTION REDUCING SURFACE | BOTH |
POLISHED PERIPHERY | NOT PROVIDED |
DIAMETER | 50.950 MILLIMETERS MINIMUM AND 51.000 MILLIMETERS MAXIMUM |
THICKNESS | 5.800 MILLIMETERS MINIMUM AND 6.200 MILLIMETERS MAXIMUM |
BEVEL ANGLE IN DEG | 45.000 NOMINAL |
BEVEL DEPTH | 0.750 MILLIMETERS NOMINAL |
FSC APPLICATION DATA | TELESCOPE MK 102 MOD 3 |