NSN 4440-01-506-3749 — this item is cataloged by the U.S. Government under National Stock Number 4440-01-506-3749. Manufacturer of record part number: 551-6685225 AY99.
Also searched as4440-01-506-3749 ·
4440015063749 ·
NIIN 015063749 ·
01-506-3749 ·
FSC 4440 Driers, Dehydrators, and Anhydrators · CAGE 53711 · 551-6685225 AY99
The Drier,air-Gas,desiccant, cataloged under National Stock Number 4440-01-506-3749, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
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 4440-01-506-3749?
NSN 4440-01-506-3749 is a Drier,air-Gas,desiccant, manufactured by Naval Sea Systems Command, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
What part numbers are listed for NSN 4440-01-506-3749?
NSN 4440-01-506-3749 has 1 manufacturer part number on file: 551-6685225 AY99 (Naval Sea Systems Command).
What are the specifications of 551-6685225 AY99?
Key specifications for 551-6685225 AY99: End Item Identification: DEHYDRATOR CONTROLLER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4440-01-506-3749 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.
What is the DEMIL code for NSN 4440-01-506-3749?
NSN 4440-01-506-3749 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.