NSN 4420-01-320-8353 · NIIN 013208353 · Part number S4421
Bath Iron Works Corporation · FSC 4420 — Heat Exchangers and Steam Condensers · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors · CAGE 70876
Government record, cited
NSN 4420-01-320-8353 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-320-8353. Manufacturer of record part number: S4421.
Also searched as4420-01-320-8353 ·
4420013208353 ·
NIIN 013208353 ·
01-320-8353 ·
FSC 4420 Heat Exchangers and Steam Condensers · CAGE 70876 · S4421
The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-320-8353, 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 Bath Iron Works Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4420-01-320-8353
Primary Part Number
S4421
Item Name
Cooler,fluid,industrial
FSC / FSG
4420 / 44 — Heat Exchangers and Steam Condensers
Manufacturer
Bath Iron Works Corporation
Status
ACTIVE
Heat Transfer Method
INDIRECT
Effective Heat Transfer Surface Area
2.62 SQUARE FEET
Style Designator
CYLINDRICAL
Tubing Outside Diameter
0.375 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN
Other items in FSC 4420 — Heat Exchangers and Steam Condensers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4420-00-003-2812
CORE ASSEMBLY,FLUID HEATER,INDUS
4420-00-004-1071
4420-00-004-1071 · Item name not on file
4420-00-004-1072
4420-00-004-1072 · Item name not on file
4420-00-004-1073
4420-00-004-1073 · Item name not on file
4420-00-004-1074
4420-00-004-1074 · Item name not on file
4420-00-004-3860
COOLER,FLUID,INDUSTRIAL
4420-00-004-5260
4420-00-004-5260 · Item name not on file
4420-00-005-2335
PURGE ORIFICE ASSEMBLY
Frequently Asked Questions
What is NSN 4420-01-320-8353?
NSN 4420-01-320-8353 is a Cooler,fluid,industrial, manufactured by Bath Iron Works Corporation, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
What part numbers are listed for NSN 4420-01-320-8353?
NSN 4420-01-320-8353 has 1 manufacturer part number on file: S4421 (Bath Iron Works Corporation).
What are the specifications of S4421?
Key specifications for S4421: Heat Transfer Method: INDIRECT; Effective Heat Transfer Surface Area: 2.62 SQUARE FEET; Style Designator: CYLINDRICAL; Tubing Outside Diameter: 0.375 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4420-01-320-8353 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.