The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-339-3569, 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 Fluid Handling Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-339-3569 |
| Primary Part Number | 5-126-12-042-001 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Length | 58.500 INCHES NOMINAL IN |
| Effective Heat Transfer Surface Area | 245.0 SQUARE FEET |
| Style Designator | RIGHT HAND TUBE DISCHARGE |
| Diameter | 16.500 INCHES NOMINAL IN |
| Tube Quantity | 236 |
| Tubing Outside Diameter | 0.500 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Height | 19.500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5-126-12-042-001 PRIMARY | Fluid Handling Llc (USA) |
| 9Y6502 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 5-126-12-042-001 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-339-3569 is a Cooler,fluid,industrial, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-339-3569 has 2 manufacturer part numbers on file: 5-126-12-042-001 (Fluid Handling Llc), 9Y6502 (Caterpillar Inc Div Caterpillar Defense).
2 possible matches (shared part number, not a government interchangeability claim): 4420-01-345-0343, 4420-01-345-0344. Verify interchangeability with system specifications before substitution.
Key specifications for 5-126-12-042-001: Heat Transfer Method: INDIRECT; Length: 58.500 INCHES NOMINAL IN; Effective Heat Transfer Surface Area: 245.0 SQUARE FEET; Style Designator: RIGHT HAND TUBE DISCHARGE. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.