The Window,observation, cataloged under National Stock Number 9340-01-244-4082, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-244-4082 |
| Primary Part Number | 5551259 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fourth Corner Radius | 0.094 INCHES NOMINAL IN |
| First Corner Radius | 0.094 INCHES NOMINAL IN |
| Second Corner Radius | 0.094 INCHES NOMINAL IN |
| Overall Thickness | 0.215 INCHES NOMINAL IN |
| Material Transparency | TRANSLUCENT |
| Style Designator | ROUNDED CORNERS |
| Material Document and Classification | MIL-P-5425 MIL SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | FRAME |
| Ply Quantity | 1 |
| Color | RED |
| Material | PLASTIC ACRYLIC |
| Third Corner Radius | 0.094 INCHES NOMINAL IN |
| Wire Mesh Pattern | SQUARE |
| 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 |
|---|---|
| 5551259 | Technical Wire Products, Llc Dba Twp (USA) |
| L317000165 | Lockheed Martin Librascope Corporation (USA) |
| 5551259 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5551259 | 5/9 Secondary reference Meltex Corp |
NSN 9340-01-244-4082 is a Window,observation, manufactured by Naval Sea Systems Command, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-244-4082 has 3 manufacturer part numbers on file: 5551259 (Technical Wire Products, Llc Dba Twp), L317000165 (Lockheed Martin Librascope Corporation), 5551259 (Naval Sea Systems Command).
Key specifications for 5551259: Fourth Corner Radius: 0.094 INCHES NOMINAL IN; First Corner Radius: 0.094 INCHES NOMINAL IN; Second Corner Radius: 0.094 INCHES NOMINAL IN; Overall Thickness: 0.215 INCHES NOMINAL IN. 13 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.