NSN 1240-01-191-1670
Part Details | OPTICAL INSTRUMENT WINDOW
1240-01-191-1670 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: 8615947, 1240-01-191-1670, 01-191-1670, 1240011911670, 011911670
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | OCT 06, 1984 | 01-191-1670 | 10908 ( WINDOW, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-191-1670
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8615947 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-01-191-1670
| Characteristic | Specifications |
|---|---|
| POLISHED SURFACE | BOTH |
| POLISHED PERIPHERY | NOT PROVIDED |
| DIAMETER | 1.692 INCHES NOMINAL |
| THICKNESS | 0.157 INCHES NOMINAL |
| BEVEL ANGLE IN DEG | 45.000 NOMINAL |
| SPECIAL FEATURES | LIGHT DEVIATION NOT TO EXCEED 1.0MINUTE OF ARC; SURFACE QUALITY IS 80-50; SPHERICAL POWER NOT TO EXCEED 4 MILLIDIOPTERS; ASTIGMATISM NOT TO EXCEED 2 MILLIDIOPTERS |
| CUBIC MEASURE | 0.4495 CUBIC INCHES |