The Window,observation, cataloged under National Stock Number 9340-01-308-8408, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-308-8408 |
| Primary Part Number | 550-B-7537 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Overall Thickness | 1.000 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| Features Provided | FRAME |
| Environmental Protection | HIGH TEMPERATURE RESISTANT |
| Material | GLASS BOROSILICATE |
| 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 |
|---|---|
| 550-B-7537 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 550-B-7537 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 9340-01-308-8408 is a Window,observation, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-308-8408 has 1 manufacturer part number on file: 550-B-7537 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 550-B-7537: Overall Diameter: 6.000 INCHES NOMINAL IN; Overall Thickness: 1.000 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: CIRCULAR. 7 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.