The Window,optical Instrument, cataloged under National Stock Number 1240-00-334-3366, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1240-00-334-3366 |
| Primary Part Number | 3000019 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Length | 7.844 INCHES NOMINAL IN |
| Polished Periphery | NOT PROVIDED |
| Width | 7.469 INCHES NOMINAL IN |
| Material | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED |
| Thickness | 0.438 INCHES NOMINAL IN |
| 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 |
|---|---|
| 3000019 | Drs C3 & Aviation Company Dba Drs Data & Imaging Systems (USA) |
| 3000019 | Leica Inc Surveying and Photogrammetry Systems Div (USA) |
| 3000019 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 3000019 | Ruhle Companies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 217455PC1 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 3000019 | 5/9 Secondary reference Drs Photronics, Inc. Dba Drs Photronics, Inc. |
| 3000019 | 5/9 Secondary reference L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division |
| 3000019 | 5/9 Secondary reference Grayco Optical Corp |
NSN 1240-00-334-3366 is a Window,optical Instrument, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-00-334-3366 has 4 manufacturer part numbers on file: 3000019 (Drs C3 & Aviation Company Dba Drs Data & Imaging Systems), 3000019 (Leica Inc Surveying and Photogrammetry Systems Div), 3000019 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 3000019 (Ruhle Companies, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 5996-00-646-3857, 5998-00-903-2918, 5305-01-684-6783. Verify interchangeability with system specifications before substitution.
Key specifications for 3000019: Length: 7.844 INCHES NOMINAL IN; Polished Periphery: NOT PROVIDED; Width: 7.469 INCHES NOMINAL IN; Material: GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED. 5 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 1240-00-334-3366 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.