PartsTable TECHNICAL DATA SHEET
NSN 4420-01-524-9258Government record, cited

Core Assembly, Fluid Heater, Indus4420-01-524-9258

NSN 4420-01-524-9258 · NIIN 015249258 · Part number N03873
Api Heat Transfer Inc. Dba Api Heat Transfer Inc · FSC 4420 — Heat Exchangers and Steam Condensers · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors · CAGE 4DKY8
Government record, cited
NSN 4420-01-524-9258 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-524-9258. Manufacturer of record part number: N03873.
Also searched as  4420-01-524-9258 · 4420015249258 · NIIN 015249258 · 01-524-9258 · FSC 4420 Heat Exchangers and Steam Condensers · CAGE 4DKY8 · N03873 · 70A07B12114
Nearby stock numbers  ·
Features
  • Core Assembly,fluid Heater,indus — FSC 4420
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Api Heat Transfer Inc. Dba Api Heat Transfer Inc
Identification
  • NSN: 4420-01-524-9258
  • NIIN: 015249258
  • FSC: 4420 — Heat Exchangers and Steam Condensers
  • FSG: 44 — Furnace, Steam, Drying, Nuclear Reactors
  • Primary part number: N03873
  • Manufacturer: Api Heat Transfer Inc. Dba Api Heat Transfer Inc
General Description

The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-524-9258, 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 Api Heat Transfer Inc. Dba Api Heat Transfer Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4420-01-524-9258
Primary Part NumberN03873
Item NameCore Assembly,fluid Heater,indus
FSC / FSG4420 / 44 — Heat Exchangers and Steam Condensers
ManufacturerApi Heat Transfer Inc. Dba Api Heat Transfer Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
N03873 PRIMARY Api Heat Transfer Inc. Dba Api Heat Transfer Inc (USA)
70A07B12114 American Precision Industries Inc Basco Div (USA)
No interchangeability data on file.
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 4420-01-524-9258?

NSN 4420-01-524-9258 is a Core Assembly,fluid Heater,indus, manufactured by Api Heat Transfer Inc. Dba Api Heat Transfer Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.

What part numbers are listed for NSN 4420-01-524-9258?

NSN 4420-01-524-9258 has 2 manufacturer part numbers on file: N03873 (Api Heat Transfer Inc. Dba Api Heat Transfer Inc), 70A07B12114 (American Precision Industries Inc Basco Div).

What are the specifications of N03873?

Key specifications for N03873: Special Features: ALL GASKETS, O-RINGS AND RETAINING RINGS ARE INCLUDED; End Item Identification: COOLER,FLUID, P/N 70A07A12114. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4420-01-524-9258 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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