The Window,optical Instrument, cataloged under National Stock Number 1240-01-314-8904, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-314-8904 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Status | ACTIVE |
| Surface Finish | GROUND |
| Reflection Reducing Surface | BOTH |
| Polished Periphery | NOT PROVIDED |
| Width | 9.000 INCHES NOMINAL IN |
| Material | GERMANIUM LOCATION NOT OTHERWISE SPECIFIED |
| Polished Surface | BOTH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 13080432 | 7/2 Vendor item drawing reference Lockheed Martin Corporation |
| 13080432 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
| 15881 | 3/9 Design control — primary reference Coherent Aerospace & Defense, Inc. |
NSN 1240-01-314-8904 is a Window,optical Instrument, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-336-6651, 8145-01-558-6701. Verify interchangeability with system specifications before substitution.
Key specifications for 1240-01-314-8904: Surface Finish: GROUND; Reflection Reducing Surface: BOTH; Polished Periphery: NOT PROVIDED; Width: 9.000 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1240-01-314-8904 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.