The Cell Assembly,optical Instrument, cataloged under National Stock Number 1240-01-341-3455, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-341-3455 |
| Primary Part Number | 639AS2940 |
| Item Name | Cell Assembly,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Optical Element Quantity | 1 |
| Eccentric Construction | NOT PROVIDED |
| Optical Element Type | SINGLE LENS |
| 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 |
|---|---|
| 639AS2940 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 588.10-100085-000 | Diehl Defence Gmbh & Co. Kg (DEU) |
NSN 1240-01-341-3455 is a Cell Assembly,optical Instrument, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-341-3455 has 2 manufacturer part numbers on file: 639AS2940 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 588.10-100085-000 (Diehl Defence Gmbh & Co. Kg).
Key specifications for 639AS2940: Optical Element Quantity: 1; Eccentric Construction: NOT PROVIDED; Optical Element Type: SINGLE LENS. 3 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 1240-01-341-3455 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.