The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-199-5643, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-199-5643 |
| Primary Part Number | 4M1048A6 |
| 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 | 59.250 INCHES NOMINAL IN |
| Style Designator | STRAIGHT PLAIN TUBE CYLINDRICAL |
| Diameter | 13.500 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-C-15730J GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | A TYPE AND 4 CLASS |
| Material | COPPER ALLOY TUBES |
| Material | COPPER ALLOY SHELL |
| Material | COPPER ALLOY TUBE SHEET |
| Material | COPPER ALLOY PLATES |
| 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 |
|---|---|
| 4M1048A6 PRIMARY | Fluid Handling Llc (USA) |
| 4M1048X6 PIECE 1 | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 4M1048X6 PIECE 1 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 4M1048A6 | 3/9 Design control — primary reference Itt Corporation Dba Itt Standard |
| MIL-C-15730J | 4/1 Identification reference U.S. Government activity |
NSN 4420-01-199-5643 is a Cooler,fluid,industrial, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-199-5643 has 2 manufacturer part numbers on file: 4M1048A6 (Fluid Handling Llc), 4M1048X6 PIECE 1 (Fluid Handling Llc).
Key specifications for 4M1048A6: Heat Transfer Method: INDIRECT; Length: 59.250 INCHES NOMINAL IN; Style Designator: STRAIGHT PLAIN TUBE CYLINDRICAL; Diameter: 13.500 INCHES NOMINAL IN. 10 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.