The Window,observation, cataloged under National Stock Number 9340-01-512-4564, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Ems Development Corporation. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-512-4564 |
| Primary Part Number | 433D0100 ITEM 26 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Ems Development Corporation |
| Status | ACTIVE |
| Material Transparency | CLEAR |
| Style Designator | SQUARE CORNERS |
| Material | GLASS |
| 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 |
|---|---|
| 433D8067-1 | Ems Development Corporation (USA) |
| PL433D0100 ITEM 26 | Ems Development Corporation (USA) |
| 433D0100 ITEM 26 PRIMARY | Ems Development Corporation (USA) |
NSN 9340-01-512-4564 is a Window,observation, manufactured by Ems Development Corporation, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-512-4564 has 3 manufacturer part numbers on file: 433D8067-1 (Ems Development Corporation), PL433D0100 ITEM 26 (Ems Development Corporation), 433D0100 ITEM 26 (Ems Development Corporation).
Key specifications for 433D0100 ITEM 26: Material Transparency: CLEAR; Style Designator: SQUARE CORNERS; Special Features: POLARIZING GLASS; PROVIDING EMI SHEILDING; End Item Identification: CONTROL UNIT; W/S:VIRGINIA CLASS SUBMARINE, SSN 774. 3 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.