The Bonnet,fluid Cooler,industrial, cataloged under National Stock Number 4420-01-359-3359, 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 Enerquip, Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-359-3359 |
| Primary Part Number | 3-216255 |
| Item Name | Bonnet,fluid Cooler,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Enerquip, Llc |
| Status | ACTIVE |
| Length | 7.100 INCHES NOMINAL7.100 INCHES NOMINAL IN |
| Style Designator | END BONNET |
| Diameter | 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN |
| Flow Type | SINGLE PASSSINGLE PASS |
| Material | COPPER 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 |
|---|---|
| SA-1215-C PIECE 1 | Enerquip, Llc (USA) |
| 3-216255 PRIMARY | Enerquip, Llc (USA) |
| Reference | Meaning |
|---|---|
| SA-1215-C | D/9 Drawing number reference only Enerquip, Llc |
NSN 4420-01-359-3359 is a Bonnet,fluid Cooler,industrial, manufactured by Enerquip, Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-359-3359 has 2 manufacturer part numbers on file: SA-1215-C PIECE 1 (Enerquip, Llc), 3-216255 (Enerquip, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4420-01-359-3360, 4420-01-359-3766. Verify interchangeability with system specifications before substitution.
Key specifications for 3-216255: Length: 7.100 INCHES NOMINAL7.100 INCHES NOMINAL IN; Style Designator: END BONNET; Diameter: 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN; Flow Type: SINGLE PASSSINGLE PASS. 5 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.