Valve, Check4820-01-666-7339

NSN 4820-01-666-7339 · NIIN 016667339

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-666-7339 · 4820016667339 · NIIN 016667339 · 01-666-7339 · FSC 4820 Valves, Nonpowered · 209-4364424ASST99 · 2648001 · 6550-53 · 6550-53AN99

Nearby stock numbers ← 4820-01-666-7271 Valve Assembly · 4820-01-666-7458 Valve Assembly →

4820-01-666-7339 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Criticality Code Justification: ZZZY
Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS

Identification

NSN: 4820-01-666-7339
NIIN: 016667339
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-01-666-7339, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-666-7339
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Criticality Code Justification	ZZZY
Reference Number Differentiating Characteristics	MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS

Lifecycle & Compliance

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
209-4364424ASST99	5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding
2648001	3/1 Design control — primary reference Draftco Incorporated Dba Draftco Inc Div Draftco Inc
6550-53	D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding
6550-53AN99	D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding

Frequently Asked Questions

What is NSN 4820-01-666-7339?

NSN 4820-01-666-7339 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-666-7339?

Key specifications for 4820-01-666-7339: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-666-7339 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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