NSN 4820-01-474-8794 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-474-8794. Manufacturer of record part number: 803-6397434-X3XXXX-049.
Also searched as4820-01-474-8794 ·
4820014748794 ·
NIIN 014748794 ·
01-474-8794 ·
FSC 4820 Valves, Nonpowered · CAGE 53711 · 803-6397434-X3XXXX-049
Flange Seat to Disk End Height: 0.153 INCHES NOMINAL IN
Flange Diameter: 1.555 INCHES NOMINAL IN
Style Designator: THREADED FLANGED
Body Inside Diameter: 0.984 INCHES NOMINAL IN
Under Flange Height: 0.378 INCHES NOMINAL IN
Material: COBALT ALLOY SEAT
Seating Surface Shape: FLAT
Identification
NSN: 4820-01-474-8794
NIIN: 014748794
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 803-6397434-X3XXXX-049
Manufacturer: Naval Sea Systems Command
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-474-8794, 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 7 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. Current acquisition status: Active.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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4820-00-001-0021 · Item name not on file
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4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-474-8794?
NSN 4820-01-474-8794 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-474-8794?
NSN 4820-01-474-8794 has 1 manufacturer part number on file: 803-6397434-X3XXXX-049 (Naval Sea Systems Command).
What are the specifications of 803-6397434-X3XXXX-049?
Key specifications for 803-6397434-X3XXXX-049: Flange Seat to Disk End Height: 0.153 INCHES NOMINAL IN; Flange Diameter: 1.555 INCHES NOMINAL IN; Style Designator: THREADED FLANGED; Body Inside Diameter: 0.984 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-474-8794 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.