The Seat,valve, cataloged under National Stock Number 4820-00-353-0544, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Corporation Div Cylinder Division. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-353-0544 |
| Primary Part Number | F1391 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Corporation Div Cylinder Division |
| Status | ACTIVE |
| Style Designator | PLAIN THREADED |
| Body Inside Diameter | 0.125 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 6CS332 | Oshkosh Defense Llc (USA) |
| F1391 PRIMARY | Parker Hannifin Corporation Div Cylinder Division (USA) |
| 14476P11 | Taylor Machine Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 6CS332 | 5/9 Secondary reference Oshkosh Corp |
| HA00569 | 5/9 Secondary reference Dempster Inc Sub of Krug Intl |
| F1391 | 3/2 Design control — primary reference U.S. Government activity |
| CS137 | 5/9 Secondary reference Dempster Inc Sub of Krug Intl |
| 983048 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-353-0544 is a Seat,valve, manufactured by Parker Hannifin Corporation Div Cylinder Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-353-0544 has 3 manufacturer part numbers on file: 6CS332 (Oshkosh Defense Llc), F1391 (Parker Hannifin Corporation Div Cylinder Division), 14476P11 (Taylor Machine Works Inc).
Key specifications for F1391: Overall Height: 0.313 INCHES NOMINAL IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 0.125 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL. 4 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.