The Silencer,dehydrator, cataloged under National Stock Number 4440-01-180-0733, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
Silencer,dehydrator
FSC / FSG
4440 — Driers, Dehydrators, and Anhydrators (FSG 44)
Technical Specifications
Parameter
Value
NSN
4440-01-180-0733
Item Name
Silencer,dehydrator
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
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4440-01-210-95637895POSSIBLE MATCH
FRAME ASSEMBLY
Possible match (shared part number)Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
4440-01-210-95647158-7POSSIBLE MATCH
BLOCK,MANIFOLD
Possible match (shared part number)Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
4440-01-210-956510101-11 ITEM 46POSSIBLE MATCH
BLOCK,MANIFOLD
Possible match (shared part number)Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
3120-01-231-0944POSSIBLE MATCH
BUSHING,SLEEVE
Possible match (shared part number)
5315-01-265-87721-010-111POSSIBLE MATCH
KEY,MACHINE
Possible match (shared part number)Parker Hannifin Corp Motion and Control Group Fluidpower Sales - Detroit
4440-01-587-8267POSSIBLE MATCH
DEHYDRATOR,DESICCANT,ELECTRIC
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
6189-23
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
10101-11
D/9Drawing number reference only
Air Dry Co of America, Llc
6189-23
3/9Design control — primary reference
Air Dry Co of America, Llc
Related Parts
4440-01-210-9563POSSIBLE MATCH
FRAME ASSEMBLY
7895
4440-01-210-9564POSSIBLE MATCH
BLOCK,MANIFOLD
7158-7
4440-01-210-9565POSSIBLE MATCH
BLOCK,MANIFOLD
10101-11 ITEM 46
3120-01-231-0944POSSIBLE MATCH
BUSHING,SLEEVE
5315-01-265-8772POSSIBLE MATCH
KEY,MACHINE
1-010-111
4440-01-587-8267POSSIBLE MATCH
DEHYDRATOR,DESICCANT,ELECTRIC
Frequently Asked Questions
What is NSN 4440-01-180-0733?
NSN 4440-01-180-0733 is a Silencer,dehydrator, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
What NSN replaces 4440-01-180-0733?
6 possible matches (shared part number, not a government interchangeability claim): 4440-01-210-9563, 4440-01-210-9564, 4440-01-210-9565. Verify interchangeability with system specifications before substitution.
Is NSN 4440-01-180-0733 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.