Seat, Valve4820-01-449-2808

NSN 4820-01-449-2808 · NIIN 014492808

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-449-2808 · 4820014492808 · NIIN 014492808 · 01-449-2808 · FSC 4820 Valves, Nonpowered · 4384536 · 803-4384536-21XX-85 · 4820PL1430270

Nearby stock numbers ← 4820-01-449-2787 Seat, Valve · 4820-01-449-2816 →

4820-01-449-2808 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Thread Length: 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN
Style Designator: PLAIN THREADED
Body Inside Diameter: 0.555 INCHES NOMINAL IN
Nominal Thread Size: 0.765 INCHES SINGLE THREADED PORTION IN
Thread Class: 3A SINGLE THREADED PORTION A
Thread Quantity Per Inch: 24 SINGLE THREADED PORTION
Material: NICKEL ALLOY SEAT

Identification

NSN: 4820-01-449-2808
NIIN: 014492808
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-449-2808, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-449-2808
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Thread Length	0.156 INCHES NOMINAL SINGLE THREADED PORTION IN
Style Designator	PLAIN THREADED
Body Inside Diameter	0.555 INCHES NOMINAL IN
Nominal Thread Size	0.765 INCHES SINGLE THREADED PORTION IN
Thread Class	3A SINGLE THREADED PORTION A
Thread Quantity Per Inch	24 SINGLE THREADED PORTION
Material	NICKEL ALLOY SEAT
Seat Angle in Deg	45.000 NOMINAL
Thread Series Designator	UNS SINGLE THREADED PORTION
Seating Surface Shape	ANGULAR

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
4384536	D/9 Drawing number reference only U.S. Government activity
803-4384536-21XX-85	3/2 Design control — primary reference U.S. Government activity
4820PL1430270	6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-449-2808?

NSN 4820-01-449-2808 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-449-2808?

Key specifications for 4820-01-449-2808: Overall Height: 0.296 INCHES NOMINAL IN; Thread Length: 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 0.555 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-449-2808 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.

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