The Bonnet,fluid Heater Industrial, cataloged under National Stock Number 4420-01-305-4022, 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 Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-305-4022 |
| Primary Part Number | 1101660000 |
| Item Name | Bonnet,fluid Heater Industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc |
| Status | ACTIVE |
| Style Designator | TWO PASS CHANNEL |
| Flow Type | TWO PASS |
| Height | 15.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1101660000 PRIMARY | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc (USA) |
| 1101623000 ITEM 3 PRIMARY | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 1101623000 | D/9 Drawing number reference only Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc |
NSN 4420-01-305-4022 is a Bonnet,fluid Heater Industrial, manufactured by Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-305-4022 has 2 manufacturer part numbers on file: 1101660000 (Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc), 1101623000 ITEM 3 (Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 4420-01-305-4023. Verify interchangeability with system specifications before substitution.
Key specifications for 1101660000: Style Designator: TWO PASS CHANNEL; Flow Type: TWO PASS; Height: 15.000 INCHES NOMINAL IN. 3 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.