The Window,observation, cataloged under National Stock Number 9340-01-143-1844, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-143-1844 |
| Primary Part Number | 74A324739-2003 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| FSC Application Data | COVER,ACCESS |
| Overall Diameter | 2.680 INCHES NOMINAL IN |
| Surface Finish | POLISHED |
| Overall Thickness | 0.150 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| Material Document and Classification | MIL-P-8184,FINISH A MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | PLASTIC METHYL METHACRYLATE |
| 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 |
|---|---|
| 74A324739-2003 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 74A324739-2003 | 5/9 Secondary reference The Boeing Company Div Defense |
| 10150503 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 9340-01-143-1844 is a Window,observation, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-143-1844 has 1 manufacturer part number on file: 74A324739-2003 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 74A324739-2003: FSC Application Data: COVER,ACCESS; Overall Diameter: 2.680 INCHES NOMINAL IN; Surface Finish: POLISHED; Overall Thickness: 0.150 INCHES NOMINAL IN. 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.