The Seat,valve, cataloged under National Stock Number 4820-00-018-5370, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-018-5370 |
| Primary Part Number | 07299001156 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Thread Length | 0.212 INCHES NOMINAL FIRST THREADED PORTION IN |
| Thread Length | 0.320 INCHES NOMINAL SECOND THREADED PORTION IN |
| Criticality Code Justification | FEAT |
| Style Designator | DOUBLE FLANGED |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Nominal Thread Size | 0.688 INCHES FIRST THREADED PORTION IN |
| Nominal Thread Size | 0.875 INCHES SECOND THREADED PORTION IN |
| Thread Class | 2A SECOND THREADED PORTION A |
| Thread Class | 2A FIRST THREADED PORTION A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNEF SECOND THREADED PORTION |
| Thread Series Designator | UNEF FIRST THREADED PORTION |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 07299001156 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| B7299.001.156 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 07299001156 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| B7299-001-156 | C/1 Advisory reference — outside the item-of-supply concept Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-00-018-5370 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-018-5370 has 1 manufacturer part number on file: 07299001156 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-225-0048, 4820-01-256-8560. Verify interchangeability with system specifications before substitution.
Key specifications for 07299001156: Overall Height: 0.755 INCHES NOMINAL IN; Thread Length: 0.212 INCHES NOMINAL FIRST THREADED PORTION IN; Thread Length: 0.320 INCHES NOMINAL SECOND THREADED PORTION IN; Criticality Code Justification: FEAT. 13 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.