The Window,observation, cataloged under National Stock Number 9340-01-111-2904, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-111-2904 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Status | ACTIVE |
| Insulating Air Space Material Arrangement | GLASS TO GLASS |
| Special Test Features | RELATIVE HUMIDITY BETWEEN PANES MAINTAINED AT LESS THAN 5 PCT AT 70.0 DEG F DEGF |
| Supplementary Features | ISOSCELES TRAPEZOID WITH 75.489 DEG ANGLES ADJACENT TO LONGER BASE,104.511 DEG ANGLES ADJACENT TO SHORTER BASE; LENGTH OF SHORTER BASE 83.6482 IN. NOMINAL IN |
| Overall Thickness | 1.060 INCHES NOMINAL IN |
| Criticality Code Justification | ABMK AND SUPP |
| Material Transparency | TRANSLUCENT |
| Style Designator | SQUARE CORNERS |
| Features Provided | FRAME |
| Ply Quantity | 4 |
| Material | GLASS PLATE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 500A854-5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 9340-01-111-2904 is a Window,observation, classified under FSC 9340, Glass Fabricated Materials. Status: active.
Key specifications for 9340-01-111-2904: Insulating Air Space Material Arrangement: GLASS TO GLASS; Special Test Features: RELATIVE HUMIDITY BETWEEN PANES MAINTAINED AT LESS THAN 5 PCT AT 70.0 DEG F DEGF; Supplementary Features: ISOSCELES TRAPEZOID WITH 75.489 DEG ANGLES ADJACENT TO LONGER BASE,104.511 DEG ANGLES ADJACENT TO SHORTER BASE; LENGTH OF SHORTER BASE 83.6482 IN. NOMINAL IN; Overall Thickness: 1.060 INCHES NOMINAL IN. 10 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.