The Window,optical Instrument, cataloged under National Stock Number 1240-01-273-9772, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is E.r. Precision Optical Corp. Dba Er Precision Optical Corp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-273-9772 |
| Primary Part Number | 5006611 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | E.r. Precision Optical Corp. Dba Er Precision Optical Corp |
| Status | ACTIVE |
| Polished Periphery | NOT PROVIDED |
| Material | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5006611 | E.r. Precision Optical Corp. Dba Er Precision Optical Corp (USA) |
| 5006611 | Covert Industries, Ltd (USA) |
| Reference | Meaning |
|---|---|
| 5006611 | 5/2 Secondary reference U.S. Government activity |
| 5006611 | 3/9 Design control — primary reference Dept of the Army U S Army Electronics Command Night Vision Laboratory |
NSN 1240-01-273-9772 is a Window,optical Instrument, manufactured by E.r. Precision Optical Corp. Dba Er Precision Optical Corp, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-273-9772 has 2 manufacturer part numbers on file: 5006611 (E.r. Precision Optical Corp. Dba Er Precision Optical Corp), 5006611 (Covert Industries, Ltd).
Key specifications for 5006611: Polished Periphery: NOT PROVIDED; Material: GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED. 2 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 1240-01-273-9772 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.