The Window,observation, cataloged under National Stock Number 9340-00-255-9409, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-00-255-9409 |
| Primary Part Number | 281243PC5 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Overall Diameter | 4.410 INCHES MINIMUM AND 4.440 INCHES MAXIMUM IN |
| Surface Finish | POLISHED |
| Overall Thickness | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Material Transparency | CLEAR |
| Style Designator | HALF ROUND |
| Edge Type | BEVELED |
| Ply Quantity | 2 |
| Material | GLASS PLATE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 281243PC5 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 9340-00-255-9409 is a Window,observation, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-00-255-9409 has 1 manufacturer part number on file: 281243PC5 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 281243PC5: Overall Diameter: 4.410 INCHES MINIMUM AND 4.440 INCHES MAXIMUM IN; Surface Finish: POLISHED; Overall Thickness: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Material Transparency: CLEAR. 8 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.
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.