Cooler, Fluid, Industrial4420-01-256-3694

NSN 4420-01-256-3694 · NIIN 012563694 · Part number 304143

Young Touchstone Company Div Young Touchstone · FSC 4420 — Heat Exchangers and Steam Condensers · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors · CAGE 67049

Government record, cited

NSN 4420-01-256-3694 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-256-3694. Manufacturer of record part number: 304143.

Also searched as 4420-01-256-3694 · 4420012563694 · NIIN 012563694 · 01-256-3694 · FSC 4420 Heat Exchangers and Steam Condensers · CAGE 67049 · 304143

Nearby stock numbers ← 4420-01-256-3541 Bonnet, Fluid Cooler, Industrial · 4420-01-256-3695 →

Features

Cooler,fluid,industrial — FSC 4420
Heat Transfer Method: INDIRECT
Length: 19.937 INCHES NOMINAL IN
Style Designator: STRUT CYLINDRICAL
Material Document and Classification: MIL-C-15730 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Diameter: 5.500 INCHES NOMINAL IN
Height: 6.750 INCHES NOMINAL IN
Width: 5.500 INCHES NOMINAL IN

Identification

NSN: 4420-01-256-3694
NIIN: 012563694
FSC: 4420 — Heat Exchangers and Steam Condensers
FSG: 44 — Furnace, Steam, Drying, Nuclear Reactors
Primary part number: 304143
Manufacturer: Young Touchstone Company Div Young Touchstone

General Description

The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-256-3694, 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 Young Touchstone Company Div Young Touchstone. Government technical data includes 8 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	4420-01-256-3694
Primary Part Number	304143
Item Name	Cooler,fluid,industrial
FSC / FSG	4420 / 44 — Heat Exchangers and Steam Condensers
Manufacturer	Young Touchstone Company Div Young Touchstone
Status	ACTIVE
Heat Transfer Method	INDIRECT
Length	19.937 INCHES NOMINAL IN
Style Designator	STRUT CYLINDRICAL
Material Document and Classification	MIL-C-15730 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Diameter	5.500 INCHES NOMINAL IN
Height	6.750 INCHES NOMINAL IN
Width	5.500 INCHES NOMINAL IN
Material	COPPER AND NICKEL ALLOY SHELL

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

Cross-Reference Index

Part Number	Manufacturer
304143 PRIMARY	Young Touchstone Company Div Young Touchstone (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 4420-01-256-3694?

NSN 4420-01-256-3694 is a Cooler,fluid,industrial, manufactured by Young Touchstone Company Div Young Touchstone, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.

What part numbers are listed for NSN 4420-01-256-3694?

NSN 4420-01-256-3694 has 1 manufacturer part number on file: 304143 (Young Touchstone Company Div Young Touchstone).

What are the specifications of 304143?

Key specifications for 304143: Heat Transfer Method: INDIRECT; Length: 19.937 INCHES NOMINAL IN; Style Designator: STRUT CYLINDRICAL; Material Document and Classification: MIL-C-15730 MIL SPEC ALL MATERIAL RESPONSES OVERALL. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4420-01-256-3694 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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