The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-617-8698, 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 Johnson Controls Navy Systems, Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4420-01-617-8698 |
| Primary Part Number | 677-22167-000 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Heat Transfer Method | DIRECT |
| Style Designator | PLAIN "U" TUBE |
| Core Diameter | 8.50 INCHES NOMINAL IN |
| Core Length | 25.75 INCHES NOMINAL IN |
| Material | COPPER ALLOY 706 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 |
|---|---|
| 677-22167-000 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 077-22047-000 | D/9 Drawing number reference only Johnson Controls Navy Systems, Llc |
| 377-22167-000 | 3/9 Design control — primary reference Johnson Controls Navy Systems, Llc |
NSN 4420-01-617-8698 is a Core Assembly,fluid Cooler, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-617-8698 has 1 manufacturer part number on file: 677-22167-000 (Johnson Controls Navy Systems, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4420-01-630-7693, 5330-01-630-8045. Verify interchangeability with system specifications before substitution.
Key specifications for 677-22167-000: Heat Transfer Method: DIRECT; Style Designator: PLAIN "U" TUBE; Core Diameter: 8.50 INCHES NOMINAL IN; Core Length: 25.75 INCHES NOMINAL IN. 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.