Retainer, Dehydrator Screen4440-01-658-3666

NSN 4440-01-658-3666 · NIIN 016583666

FSC 4440 — Driers, Dehydrators, and Anhydrators · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors

Government record, cited

Also searched as 4440-01-658-3666 · 4440016583666 · NIIN 016583666 · 01-658-3666 · FSC 4440 Driers, Dehydrators, and Anhydrators · PL7438456 REV 3 NO 1 · 79L0398-00

Nearby stock numbers ← 4440-01-658-0457 Parts Kit, Dehydrator · 4440-01-659-4373 Desiccant Pack →

Features

Retainer,dehydrator Screen — FSC 4440

Identification

NSN: 4440-01-658-3666
NIIN: 016583666
FSC: 4440 — Driers, Dehydrators, and Anhydrators
FSG: 44 — Furnace, Steam, Drying, Nuclear Reactors

General Description

The Retainer,dehydrator Screen, cataloged under National Stock Number 4440-01-658-3666, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Retainer,dehydrator Screen
FSC / FSG	4440 — Driers, Dehydrators, and Anhydrators (FSG 44)

Technical Specifications

Parameter	Value
NSN	4440-01-658-3666
Item Name	Retainer,dehydrator Screen
FSC / FSG	4440 / 44 — Driers, Dehydrators, and Anhydrators
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

Cross-Reference Index

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

Reference documents

Reference	Meaning
PL7438456 REV 3 NO 1	D/9 Drawing number reference only U.S. Government activity
79L0398-00	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4440 — Driers, Dehydrators, and Anhydrators

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4440-00-001-6294

4440-00-001-6294 · Item name not on file

4440-00-001-6296

4440-00-001-6296 · Item name not on file

4440-00-005-5084

DEHYDRATOR UNIT,NONREACTIVATING

4440-00-006-0073

CARTRIDGE,DEHYDRATOR

4440-00-007-2318

TIMER

4440-00-008-4864

SENSOR ASSEMBLY,HUM

4440-00-009-4422

4440-00-009-4422 · Item name not on file

4440-00-009-5282

4440-00-009-5282 · Item name not on file

Frequently Asked Questions

What is NSN 4440-01-658-3666?

NSN 4440-01-658-3666 is a Retainer,dehydrator Screen, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.

Is NSN 4440-01-658-3666 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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