Seat, Valve4820-01-176-2822

NSN 4820-01-176-2822 · NIIN 011762822

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-176-2822 · 4820011762822 · NIIN 011762822 · 01-176-2822 · FSC 4820 Valves, Nonpowered · S41-041 · 417-534-4 · 417-534-4 PIECE 36 · S41-041 PIECE 36

Nearby stock numbers ← 4820-01-176-2808 · 4820-01-176-2829 Valve, Linear, Directional Control →

4820-01-176-2822 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Thread Length: 1.188 INCHES NOMINAL SINGLE THREADED PORTION IN
Style Designator: PLAIN THREADED
Body Inside Diameter: 5.500 INCHES NOMINAL IN
Nominal Thread Size: 1.312 INCHES SINGLE THREADED PORTION IN
Thread Class: 3A SINGLE THREADED PORTION A
Thread Quantity Per Inch: 12 SINGLE THREADED PORTION
Material: COBALT ALLOY OVERALL

Identification

NSN: 4820-01-176-2822
NIIN: 011762822
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-176-2822, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-176-2822
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Thread Length	1.188 INCHES NOMINAL SINGLE THREADED PORTION IN
Style Designator	PLAIN THREADED
Body Inside Diameter	5.500 INCHES NOMINAL IN
Nominal Thread Size	1.312 INCHES SINGLE THREADED PORTION IN
Thread Class	3A SINGLE THREADED PORTION A
Thread Quantity Per Inch	12 SINGLE THREADED PORTION
Material	COBALT ALLOY OVERALL
Thread Series Designator	UN SINGLE THREADED PORTION
Seating Surface Shape	FLAT

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
S41-041	D/9 Drawing number reference only U.S. Government activity
417-534-4	D/9 Drawing number reference only Merritt-Chapman and Scott Corp New York Shipbuilding Co Div
417-534-4 PIECE 36	5/9 Secondary reference Merritt-Chapman and Scott Corp New York Shipbuilding Co Div
S41-041 PIECE 36	3/2 Design control — primary reference U.S. Government activity

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 4820-01-176-2822?

NSN 4820-01-176-2822 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-176-2822?

Key specifications for 4820-01-176-2822: Overall Height: 1.500 INCHES NOMINAL IN; Thread Length: 1.188 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 5.500 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-176-2822 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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