The Window,observation, cataloged under National Stock Number 9330-01-063-5931, is classified within Federal Supply Class 9330 (Plastics Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Wheeler Fleet Solutions, Co.. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9330-01-063-5931 |
| Primary Part Number | 492-851-7540 |
| Item Name | Window,observation |
| FSC / FSG | 9330 / 93 — Plastics Fabricated Materials |
| Manufacturer | Wheeler Fleet Solutions, Co. |
| Status | ACTIVE |
| Overall Diameter | 4.000 INCHES NOMINAL IN |
| Surface Finish | FINE FINISHED |
| Overall Thickness | 0.750 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | CIRCULAR |
| Material Document and Classification | MIL-P-5425,FINISH A MIL SPEC SINGLE MATERIAL RESPONSE |
| Nondefinitive Spec/std Data | A FINISH |
| Edge Type | FLAT FINISH |
| Environmental Protection | HIGH TEMPERATURE RESISTANT AND WEATHER RESISTANT |
| Minimum Tensile Strength | 8000 POUNDS PER SQUARE INCH LBS |
| Material | PLASTIC ACRYLIC |
| Heat Absorbing Characteristic | HIGH LIGHT TRANSMISSION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 492-851-7540 | Wheeler Fleet Solutions, Co. (USA) |
| Reference | Meaning |
|---|---|
| 633-8054-16 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 851-7540 | C/1 Advisory reference — outside the item-of-supply concept Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| MIL-P-5425 | 4/1 Identification reference U.S. Government activity |
| 851-7540 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
| 9330PL0792196 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 9330-01-063-5931 is a Window,observation, manufactured by Wheeler Fleet Solutions, Co., classified under FSC 9330, Plastics Fabricated Materials. Status: active.
NSN 9330-01-063-5931 has 1 manufacturer part number on file: 492-851-7540 (Wheeler Fleet Solutions, Co.).
Key specifications for 492-851-7540: Overall Diameter: 4.000 INCHES NOMINAL IN; Surface Finish: FINE FINISHED; Overall Thickness: 0.750 INCHES NOMINAL IN; Material Transparency: CLEAR. 12 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.