The Bonnet,fluid Cooler,industrial, cataloged under National Stock Number 4420-01-327-9871, 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 Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-327-9871 |
| Primary Part Number | D2641-3 |
| Item Name | Bonnet,fluid Cooler,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp |
| Status | ACTIVE |
| Length | 10.875 INCHES NOMINAL10.875 INCHES NOMINAL IN |
| Style Designator | TWO PASS CHANNEL |
| Diameter | 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN |
| Flow Type | SINGLE PASSSINGLE PASS |
| Height | 10.500 INCHES NOMINAL10.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY AND NICKEL ALLOY 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 |
|---|---|
| D2654-1 | Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp (USA) |
| D2641-3 PRIMARY | Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| D2641 | D/9 Drawing number reference only Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp |
| D2654 | D/9 Drawing number reference only Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp |
NSN 4420-01-327-9871 is a Bonnet,fluid Cooler,industrial, manufactured by Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-327-9871 has 2 manufacturer part numbers on file: D2654-1 (Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp), D2641-3 (Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp).
Key specifications for D2641-3: Length: 10.875 INCHES NOMINAL10.875 INCHES NOMINAL IN; Style Designator: TWO PASS CHANNEL; Diameter: 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN; Flow Type: SINGLE PASSSINGLE PASS. 6 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.