The Filter,light,optical Instrument, cataloged under National Stock Number 1240-01-317-7558, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-317-7558 |
| Item Name | Filter,light,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Status | ACTIVE |
| Overall Diameter | 1.163 INCHES NOMINAL IN |
| Overall Thickness | 0.079 INCHES NOMINAL IN |
| Density Variability | NOT VARIABLE |
| Material | GLASS SURFACE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| J72E0020-2 | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Electronic Systems Co |
NSN 1240-01-317-7558 is a Filter,light,optical Instrument, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
Key specifications for 1240-01-317-7558: Overall Diameter: 1.163 INCHES NOMINAL IN; Overall Thickness: 0.079 INCHES NOMINAL IN; Special Features: GLASS IS VG 9 GREEN; End Item Identification: F-15; 4920-01-242-8325. 4 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 1240-01-317-7558 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.