The Window,observation, cataloged under National Stock Number 9340-00-171-4396, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is General Motors Corp. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 9340-00-171-4396 |
| Primary Part Number | 637629 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Overall Diameter | 1.375 INCHES NOMINAL IN |
| Overall Thickness | 0.375 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| 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 |
|---|---|
| 637629 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 637629 | 5/9 Secondary reference White Consolidated Industries Inc Frigidaire Div |
NSN 9340-00-171-4396 is a Window,observation, manufactured by General Motors Corp, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-00-171-4396 has 1 manufacturer part number on file: 637629 (General Motors Corp).
Key specifications for 637629: Overall Diameter: 1.375 INCHES NOMINAL IN; Overall Thickness: 0.375 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: CIRCULAR. 5 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.