The Bonnet,fluid Cooler,industrial, cataloged under National Stock Number 4420-01-345-0344, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-345-0344 |
| Item Name | Bonnet,fluid Cooler,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Length | 5.312 INCHES NOMINAL5.312 INCHES NOMINAL IN |
| Style Designator | END BONNET |
| Diameter | 16.250 INCHES NOMINAL16.250 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 |
| Reference | Meaning |
|---|---|
| 512612042001 REV C PC 4 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 512612042001 REV C PC 4 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 3-136-2-12-815- | C/1 Advisory reference — outside the item-of-supply concept Itt Corporation Dba Itt Standard |
| 313621281501 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 512612042001 | D/9 Drawing number reference only Itt Corporation Dba Itt Standard |
| 313621281501 | 3/9 Design control — primary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-345-0344 is a Bonnet,fluid Cooler,industrial, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-01-345-0344: Length: 5.312 INCHES NOMINAL5.312 INCHES NOMINAL IN; Style Designator: END BONNET; Diameter: 16.250 INCHES NOMINAL16.250 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.