The Baffle,fluid Heater,industrial, cataloged under National Stock Number 4420-01-643-7390, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-643-7390 |
| Item Name | Baffle,fluid Heater,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Outside Diameter | 5.13 INCHES NOMINAL5.13 INCHES NOMINAL IN |
| Shape | ROUND |
| Material | COPPER TUBES |
| Material | BRASS SHELL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AA-1024-4-6-FP | 3/9 Design control — primary reference American Industrial Heat Transfer, Inc. |
NSN 4420-01-643-7390 is a Baffle,fluid Heater,industrial, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-01-643-7390: Outside Diameter: 5.13 INCHES NOMINAL5.13 INCHES NOMINAL IN; Shape: ROUND; Special Features: COOLING TUBE DIA.-0.375 IN. BAFFLE SPACING-4.0IN. 4 PASSCOOLING TUBE DIA.-0.375 IN. BAFFLE SPACING-4.0IN. 4 PASS IN; Part Name Assigned by Controlling Agency: HEAT EXCHANGEHEAT EXCHANGE. 4 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.