The Heater,fluid,industrial, cataloged under National Stock Number 4420-01-306-4049, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-306-4049 |
| Primary Part Number | B-701-A4-T-BR |
| 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 | 13.470 INCHES NOMINAL IN |
| Connection Type | THREADED INTERNAL PIPE HEATED FLUID INLET |
| Style Designator | COILED PLAIN TYPE |
| Diameter | 5.250 INCHES NOMINAL IN |
| Connection Nominal Diameter | 0.750 INCHES HEATED FLUID INLET IN |
| Height | 6.250 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 |
|---|---|
| B-701-A4-T-BR PRIMARY | Thermal Transfer Products Ltd (USA) |
| Reference | Meaning |
|---|---|
| B701-A4T | 5/9 Secondary reference Thermal Transfer Products Ltd |
NSN 4420-01-306-4049 is a Heater,fluid,industrial, manufactured by Thermal Transfer Products Ltd, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-306-4049 has 1 manufacturer part number on file: B-701-A4-T-BR (Thermal Transfer Products Ltd).
Key specifications for B-701-A4-T-BR: Heat Transfer Method: INDIRECT; Length: 13.470 INCHES NOMINAL IN; Connection Type: THREADED INTERNAL PIPE HEATED FLUID INLET; Style Designator: COILED PLAIN 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.