The Window,observation, cataloged under National Stock Number 9340-00-585-2525, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 13 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-00-585-2525 |
| Primary Part Number | 58-483 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Fourth Corner Radius | 0.188 INCHES NOMINAL IN |
| First Corner Radius | 0.188 INCHES NOMINAL IN |
| Second Corner Radius | 0.188 INCHES NOMINAL IN |
| Surface Finish | POLISHED |
| Overall Thickness | 0.375 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | ROUNDED CORNERS |
| Material Document and Classification | DD-G-451 FED SPEC SINGLE MATERIAL RESPONSE |
| Edge Type | QUARTER ROUND |
| Ply Quantity | 2 |
| Environmental Protection | SHATTER PROOF |
| Material | GLASS |
| Third Corner Radius | 0.188 INCHES NOMINAL IN |
| 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 |
|---|---|
| 58-483 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 9340-00-585-2525 is a Window,observation, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-00-585-2525 has 1 manufacturer part number on file: 58-483 (Lockheed Martin Corporation Div Rms - Mitchel Field).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-045-8740. Verify interchangeability with system specifications before substitution.
Key specifications for 58-483: Fourth Corner Radius: 0.188 INCHES NOMINAL IN; First Corner Radius: 0.188 INCHES NOMINAL IN; Second Corner Radius: 0.188 INCHES NOMINAL IN; Surface Finish: POLISHED. 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.