The Window,observation, cataloged under National Stock Number 9340-01-126-8567, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-126-8567 |
| Primary Part Number | 13040137 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Overall Diameter | 3.390 INCHES MINIMUM AND 3.400 INCHES MAXIMUM IN |
| Surface Finish | POLISHED |
| Overall Thickness | 0.175 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| Material Document and Classification | MIL-G-174,TY 517-642,CL 1,GR A MIL SPEC SINGLE MATERIAL RESPONSE |
| Temp at Maximum Operating Pressure | 360.0 CELSIUS DEGC |
| 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 |
|---|---|
| 13040137 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 13040137 | 5/1 Secondary reference Cvi Laser Llc Dba Cvi Optical Components |
| 13040137 | 5/1 Secondary reference Dunlin Manufacturing / Skypen Industries Inc Dba Dunlin Mfg Co |
NSN 9340-01-126-8567 is a Window,observation, manufactured by Us Army Aviation and Missile Command, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-126-8567 has 1 manufacturer part number on file: 13040137 (Us Army Aviation and Missile Command).
Key specifications for 13040137: Overall Diameter: 3.390 INCHES MINIMUM AND 3.400 INCHES MAXIMUM IN; Surface Finish: POLISHED; Overall Thickness: 0.175 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Material Transparency: CLEAR. 8 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.