The Seat,valve, cataloged under National Stock Number 4820-01-061-3084, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-061-3084 |
| Primary Part Number | 711-4678213 ITEM 6 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body Outside Diameter | 3.312 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-N-281,CLASS A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 2.936 INCHES MINIMUM AND 2.938 INCHES MAXIMUM IN |
| Material | NICKEL 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 |
|---|---|
| 711-4678213 ITEM 6 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87692-1811 ITEM 6 | 5/2 Secondary reference U.S. Government activity |
| 4678213-0006 | 3/2 Design control — primary reference U.S. Government activity |
| 711-4678213 | D/9 Drawing number reference only Naval Sea Systems Command |
| 87692-1811 | D/9 Drawing number reference only U.S. Government activity |
| 711-4678213 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 36-01-7854 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-061-3084 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-061-3084 has 1 manufacturer part number on file: 711-4678213 ITEM 6 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-109-3215, 5342-01-109-4185. Verify interchangeability with system specifications before substitution.
Key specifications for 711-4678213 ITEM 6: Overall Height: 0.359 INCHES NOMINAL IN; Body Outside Diameter: 3.312 INCHES NOMINAL IN; Style Designator: PLAIN; Material Document and Classification: QQ-N-281,CLASS A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.