Disk, Valve4820-00-177-0486

NSN 4820-00-177-0486 · NIIN 001770486

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-00-177-0486 · 4820001770486 · NIIN 001770486 · 00-177-0486 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-00-177-0470 · 4820-00-177-0499 Valve, Bleed →

4820-00-177-0486 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Shank Diameter: 0.500 INCHES NOMINAL IN
Flange Seat to Disk End Height: 0.625 INCHES NOMINAL IN
Outside Diameter: 0.812 INCHES NOMINAL IN
Style Designator: POPPET
Inside Diameter: 0.393 INCHES NOMINAL IN
Media for Which Designed: OXYGEN, GASEOUS
Material: ALUMINUM ALLOY

Identification

NSN: 4820-00-177-0486
NIIN: 001770486
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-00-177-0486, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-00-177-0486
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Shank Diameter	0.500 INCHES NOMINAL IN
Flange Seat to Disk End Height	0.625 INCHES NOMINAL IN
Outside Diameter	0.812 INCHES NOMINAL IN
Style Designator	POPPET
Inside Diameter	0.393 INCHES NOMINAL IN
Media for Which Designed	OXYGEN, GASEOUS
Material	ALUMINUM ALLOY

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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5340-01-055-9772161065-01 POSSIBLE MATCH

BRACKET,ANGLE

Possible match (shared part number)Ge Aviation Systems Llc

Cross-Reference Index

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

Reference documents

Reference	Meaning
1610650-1	3/2 Design control — primary reference U.S. Government activity

Related Parts

5340-01-055-9772POSSIBLE MATCH

BRACKET,ANGLE

161065-01

Frequently Asked Questions

What is NSN 4820-00-177-0486?

NSN 4820-00-177-0486 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-00-177-0486?

1 possible match (shared part number, not a government interchangeability claim): 5340-01-055-9772. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-00-177-0486?

Key specifications for 4820-00-177-0486: Shank Diameter: 0.500 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.625 INCHES NOMINAL IN; Overall Height: 0.750 INCHES NOMINAL IN; Outside Diameter: 0.812 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-177-0486 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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