Seat, Valve4820-01-286-4356

NSN 4820-01-286-4356 · NIIN 012864356

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-286-4356 · 4820012864356 · NIIN 012864356 · 01-286-4356 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-286-4342 Valve, Relief, Pressure and Temper · 4820-01-286-4373 Clamp, Retaining →

4820-01-286-4356 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Flange Diameter: 1.682 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
Style Designator: THREADED FLANGED
Material Document and Classification: AMS 5648 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter: 0.825 INCHES MINIMUM AND 0.826 INCHES MAXIMUM IN
Nominal Thread Size: 1.312 INCHES SINGLE THREADED PORTION IN
Under Flange Height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN

Identification

NSN: 4820-01-286-4356
NIIN: 012864356
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-286-4356, 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10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-286-4356
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flange Seat to Disk End Height	0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Flange Diameter	1.682 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
Style Designator	THREADED FLANGED
Material Document and Classification	AMS 5648 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter	0.825 INCHES MINIMUM AND 0.826 INCHES MAXIMUM IN
Nominal Thread Size	1.312 INCHES SINGLE THREADED PORTION IN
Under Flange Height	0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Thread Quantity Per Inch	12 SINGLE THREADED PORTION
Material	STEEL OVERALL
Thread Series Designator	UNIFIED NATIONAL JOINT (UNJ) SINGLE THREADED PORTION

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
3201-26689-20-1	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 4820-01-286-4356?

NSN 4820-01-286-4356 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-286-4356?

Key specifications for 4820-01-286-4356: Flange Seat to Disk End Height: 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Flange Diameter: 1.682 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN; Style Designator: THREADED FLANGED; Material Document and Classification: AMS 5648 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-286-4356 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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