The Window,observation, cataloged under National Stock Number 9340-01-131-8083, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Ametek Inc Schutte and Koerting Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-131-8083 |
| Primary Part Number | 50-S-109-M ITEM 5 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Ametek Inc Schutte and Koerting Div |
| Status | ACTIVE |
| Overall Diameter | 3.906 INCHES NOMINAL IN |
| Surface Finish | FINE FINISHED |
| Overall Thickness | 0.500 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| 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 |
|---|---|
| 50-S-109-M ITEM 5 PRIMARY | Ametek Inc Schutte and Koerting Div (USA) |
| Reference | Meaning |
|---|---|
| 55S-0137M-001 | 5/9 Secondary reference Ametek Inc Schutte and Koerting Div |
| 50-S-109-M | 5/1 Secondary reference Ametek Inc Schutte and Koerting Div |
NSN 9340-01-131-8083 is a Window,observation, manufactured by Ametek Inc Schutte and Koerting Div, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-131-8083 has 1 manufacturer part number on file: 50-S-109-M ITEM 5 (Ametek Inc Schutte and Koerting Div).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-155-7438. Verify interchangeability with system specifications before substitution.
Key specifications for 50-S-109-M ITEM 5: Overall Diameter: 3.906 INCHES NOMINAL IN; Surface Finish: FINE FINISHED; Overall Thickness: 0.500 INCHES NOMINAL IN; Material Transparency: CLEAR. 6 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.