Part Details | OPTICAL INSTRUMENT WINDOW
4920-00-815-2659 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: 568A271P1, 568A271P1, 4920-00-815-2659, 00-815-2659, 4920008152659, 008152659
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 49 | JAN 01, 1962 | 00-815-2659 | 10908 ( WINDOW, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 4920-00-815-2659
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 568A271P1 | 89954 | BAE SYSTEMS CONTROLS INC. |
| 568A271P1 | 24446 | GENERAL ELECTRIC COMPANY |
Technical Data | NSN 4920-00-815-2659
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS |
| REFRACTION INDEX | 1.5180 NOMINAL |
| DISPERSION | 64.5 ANGSTROMS NOMINAL |
| POLISHED SURFACE | BOTH |
| POLISHED PERIPHERY | NOT PROVIDED |
| WIDTH | 49.276 MILLIMETERS MINIMUM AND 49.784 MILLIMETERS MAXIMUM |
| LENGTH | 78.740 MILLIMETERS MINIMUM AND 79.248 MILLIMETERS MAXIMUM |
| THICKNESS | 2.910 MILLIMETERS MINIMUM AND 3.170 MILLIMETERS MAXIMUM |
| BEVEL ANGLE IN DEG | 45.000 NOMINAL |
| BEVEL DEPTH | 0.260 MILLIMETERS MINIMUM AND 0.390 MILLIMETERS MAXIMUM |
| FSC APPLICATION DATA | TEST SET,INDICATOR ASSY,FAULT LOCATING PART NO. 535E211G1 |