The Window,observation, cataloged under National Stock Number 9340-01-221-8250, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-221-8250 |
| Primary Part Number | B4028360 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| FSC Application Data | RADIO AND TELEVISION COMMUNICATIONS EQUIPMENT,NON-AIRBORNE |
| Surface Finish | FINE FINISHED |
| Overall Thickness | 0.080 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | SQUARE CORNERS |
| Edge Type | FLAT FINISH |
| Color | WHITE, OPAL |
| Material | PLASTIC ACRYLIC |
| Wire Mesh Pattern | SQUARE |
| 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 |
|---|---|
| B4028360 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| Reference | Meaning |
|---|---|
| 71-00508 | 5/9 Secondary reference Technical Wire Products, Llc Dba Twp |
| B4028360 | 5/2 Secondary reference U.S. Government activity |
| B4028360 | 5/9 Secondary reference Technical Wire Products, Llc Dba Twp |
NSN 9340-01-221-8250 is a Window,observation, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-221-8250 has 1 manufacturer part number on file: B4028360 (Department of the Army Hq United States Army Communications Research and Development Command).
Key specifications for B4028360: FSC Application Data: RADIO AND TELEVISION COMMUNICATIONS EQUIPMENT,NON-AIRBORNE; Surface Finish: FINE FINISHED; Overall Thickness: 0.080 INCHES NOMINAL IN; Material Transparency: CLEAR. 9 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.