The Window,observation, cataloged under National Stock Number 9340-01-620-3870, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Mainstream Engineering Corp. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-620-3870 |
| Primary Part Number | 5002785 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Mainstream Engineering Corp |
| Status | ACTIVE |
| Style Designator | SQUARE CORNERS |
| 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 |
|---|---|
| 5002785 PRIMARY | Mainstream Engineering Corp (USA) |
NSN 9340-01-620-3870 is a Window,observation, manufactured by Mainstream Engineering Corp, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-620-3870 has 1 manufacturer part number on file: 5002785 (Mainstream Engineering Corp).
Key specifications for 5002785: Style Designator: SQUARE CORNERS; Part Name Assigned by Controlling Agency: WINDOW, OBSERVATION; End Item Identification: MRU-TQ1-404. 1 specification is 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.