PartsTable TECHNICAL DATA SHEET

NSN 4820-01-449-0640Government record, cited

Stem, Fluid Valve4820-01-449-0640

NSN 4820-01-449-0640 · NIIN 014490640

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-449-0640 · 4820014490640 · NIIN 014490640 · 01-449-0640 · FSC 4820 Valves, Nonpowered · 24873-01A · 25147

Nearby stock numbers ← 4820-01-449-0581 Valve, Check · 4820-01-449-0642 Retainer, Disk, Valve →

4820-01-449-0640 — Valves, Nonpowered

Features

Stem,fluid Valve — FSC 4820

Identification

NSN: 4820-01-449-0640
NIIN: 014490640
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-449-0640, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Stem,fluid Valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)

Technical Specifications

Parameter	Value
NSN	4820-01-449-0640
Item Name	Stem,fluid Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE

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 4

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

4820-01-449-064224870-01G POSSIBLE MATCH

RETAINER,DISK,VALVE

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-449-064324872-01C POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-449-0652C0777H POSSIBLE MATCH

GUIDE,VALVE STEM

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

4820-01-449-107925147-01J POSSIBLE MATCH

VALVE,DIAPHRAGM,STOP

Possible match (shared part number)Griswold Industries Dba Cla-Val Co

Cross-Reference Index

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

Reference documents

Reference	Meaning
24873-01A	3/2 Design control — primary reference U.S. Government activity
25147	D/9 Drawing number reference only U.S. Government activity

Related Parts

4820-01-449-0642POSSIBLE MATCH

RETAINER,DISK,VALVE

24870-01G

4820-01-449-0643POSSIBLE MATCH

STEM,FLUID VALVE

24872-01C

4820-01-449-0652POSSIBLE MATCH

GUIDE,VALVE STEM

C0777H

4820-01-449-1079POSSIBLE MATCH

VALVE,DIAPHRAGM,STOP

25147-01J

Frequently Asked Questions

What is NSN 4820-01-449-0640?

NSN 4820-01-449-0640 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-449-0640?

4 possible matches (shared part number, not a government interchangeability claim): 4820-01-449-0642, 4820-01-449-0643, 4820-01-449-0652. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-449-0640 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.

PartsTable Design LLC · partstable.com