The Window,observation, cataloged under National Stock Number 9340-00-073-8685, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is The Boeing Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 9340-00-073-8685 |
| Primary Part Number | 114C1156-4 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Overall Thickness | 0.125 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | SQUARE CORNERS |
| Material Document and Classification | MIL-P-5425,FINISH A MIL SPEC SINGLE MATERIAL RESPONSE |
| Ply Quantity | 1 |
| Special Markings | NUMERALS AND CALIBRATIONS ENGRAVED AND FILLED W/FLUORESCENT LUMINESCENT PALE YELLOW PAINT PER MIL-L-25142 |
| Material | PLASTIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 114C1156-4 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 114C1156-4 | 5/2 Secondary reference U.S. Government activity |
NSN 9340-00-073-8685 is a Window,observation, manufactured by The Boeing Company, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-00-073-8685 has 1 manufacturer part number on file: 114C1156-4 (The Boeing Company).
Key specifications for 114C1156-4: Overall Thickness: 0.125 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: SQUARE CORNERS; Material Document and Classification: MIL-P-5425,FINISH A MIL SPEC SINGLE MATERIAL RESPONSE. 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.
NSN 9340-00-073-8685 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.