NSN 1240-00-580-0635
Part Details | OPTICAL INSTRUMENT WINDOW
1240-00-580-0635 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: 8298401, 1240-00-580-0635, 00-580-0635, 1240005800635, 005800635
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1963 | 00-580-0635 | 10908 ( WINDOW, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-580-0635
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8298401 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-580-0635
| Characteristic | Specifications |
|---|---|
| POLISHED SURFACE | BOTH |
| REFLECTION REDUCING SURFACE | BOTH |
| POLISHED PERIPHERY | NOT PROVIDED |
| WIDTH | 1.312 INCHES NOMINAL |
| LENGTH | 4.307 INCHES NOMINAL |
| THICKNESS | 0.302 INCHES MINIMUM AND 0.332 INCHES MAXIMUM |
| BEVEL ANGLE IN DEG | 30.000 NOMINAL |
| BEVEL DEPTH | 0.125 INCHES NOMINAL |
| SPECIAL FEATURES | LIGHT DEVIATION NOT TO EXCEED 3 MIN OF ARC PLUS ASTIGMATISM NOT TO EXCEED 20 MILLIDIOPTERS |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| FSC APPLICATION DATA | FIRE CONTROL PERISCOPE |
