The Heater,fluid,industrial, cataloged under National Stock Number 4420-01-436-0451, 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 Thermal Transfer Products Ltd. 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.
| Parameter | Value |
|---|---|
| NSN | 4420-01-436-0451 |
| Primary Part Number | A0-20 |
| Item Name | Heater,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Thermal Transfer Products Ltd |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Length | 74.100 INCHES NOMINAL IN |
| Connection Type | THREADED INTERNAL PIPE HEATED FLUID INLET |
| Style Designator | FLANGED END TYPE |
| Height | 32.380 INCHES NOMINAL IN |
| Width | 39.750 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| Material | COPPER ALLOY TUBES |
| 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 |
|---|---|
| A0-20 PRIMARY | Thermal Transfer Products Ltd (USA) |
NSN 4420-01-436-0451 is a Heater,fluid,industrial, manufactured by Thermal Transfer Products Ltd, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-436-0451 has 1 manufacturer part number on file: A0-20 (Thermal Transfer Products Ltd).
Key specifications for A0-20: Heat Transfer Method: INDIRECT; Length: 74.100 INCHES NOMINAL IN; Connection Type: THREADED INTERNAL PIPE HEATED FLUID INLET; Style Designator: FLANGED END TYPE. 8 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.