NSN 4420-01-421-2101 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-421-2101. Manufacturer of record part number: 363141 4003 LT.
The Plate,cooling,heat Exchanger, cataloged under National Stock Number 4420-01-421-2101, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Alfa Laval Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
Plate,cooling,heat Exchanger
FSC / FSG
4420 — Heat Exchangers and Steam Condensers (FSG 44)
Manufacturers
Alfa Laval Inc (CAGE 71871)
Technical Specifications
Parameter
Value
NSN
4420-01-421-2101
Primary Part Number
363141 4003 LT
Item Name
Plate,cooling,heat Exchanger
FSC / FSG
4420 / 44 — Heat Exchangers and Steam Condensers
Manufacturer
Alfa Laval Inc
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 4420-01-421-2101 is a Plate,cooling,heat Exchanger, manufactured by Alfa Laval Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
What part numbers are listed for NSN 4420-01-421-2101?
NSN 4420-01-421-2101 has 2 manufacturer part numbers on file: 363141 4003 LT (Alfa Laval Inc), 8723958 ITEM 35B (Alfa Laval Inc).
What NSN replaces 4420-01-421-2101?
4 possible matches (shared part number, not a government interchangeability claim): 4420-01-421-2105, 4420-01-421-2110, 4420-01-421-2114. Verify interchangeability with system specifications before substitution.
Is NSN 4420-01-421-2101 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.