The Seat,valve, cataloged under National Stock Number 4820-01-614-0720, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is American Machining Co. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-614-0720 |
| Primary Part Number | 845-8219247-056 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | American Machining Co |
| Status | ACTIVE |
| Body Outside Diameter | 4.855 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 3.000 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| 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 |
|---|---|
| 845-8219247 ITEM NO.56 | Naval Sea Systems Command (USA) |
| 845-8219247-056 | Naval Sea Systems Command (USA) |
| 845-8219247-056 PRIMARY | American Machining Co (USA) |
NSN 4820-01-614-0720 is a Seat,valve, manufactured by American Machining Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-614-0720 has 3 manufacturer part numbers on file: 845-8219247 ITEM NO.56 (Naval Sea Systems Command), 845-8219247-056 (Naval Sea Systems Command), 845-8219247-056 (American Machining Co).
Key specifications for 845-8219247-056: Overall Height: 0.720 INCHES NOMINAL IN; Body Outside Diameter: 4.855 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 3.000 INCHES NOMINAL IN. 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.