The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-00-360-2021, 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 Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 36 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-00-360-2021 |
| Primary Part Number | 185429D146 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Effective Heat Transfer Surface Area | 6.1 SQUARE FEET |
| Style Designator | PLAIN "U" TUBE |
| Core Diameter | 6.4375 INCHES NOMINAL IN |
| Tube Attachment Method | BRAZED BOTH ENDS |
| Core Length | 45.874 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.875 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | COPPER ALLOY TUBES |
| 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 |
|---|---|
| 188081PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185429D146 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 187682PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188082PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185429PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187681PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185413PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187698PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 188406PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185429D146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 1R3000-30-146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185414PC146 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 185414PC146 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 185429PC146 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 188406PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185414PC146 | 5/9 Secondary reference U.S. Government activity |
| 1R3000-30-146 | 5/9 Secondary reference U.S. Government activity |
| 187681PC146 | 5/9 Secondary reference U.S. Government activity |
| 185414PC146 | 5/9 Secondary reference Ingersoll Rand Co |
| 188082PC146 | 5/9 Secondary reference Ingersoll Rand Co |
| 185429D146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185414PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188082PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187681PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185414PC146 | 5/9 Secondary reference U.S. Government activity |
| 187698PC146 | 5/9 Secondary reference U.S. Government activity |
| 188406PC146 | 5/9 Secondary reference U.S. Government activity |
| 185413PC146 | 5/9 Secondary reference U.S. Government activity |
| 188081PC146 | 5/9 Secondary reference U.S. Government activity |
| 188081PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185429D146 | 3/9 Design control — primary reference U.S. Government activity |
| 185429PC146 | 5/9 Secondary reference U.S. Government activity |
| 187682PC146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 1R3000-30-146 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4420-00-360-2021 is a Core Assembly,fluid Cooler, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-00-360-2021 has 14 manufacturer part numbers on file: 188081PC146 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 185429D146 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 187682PC146 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 188082PC146 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 185429PC146 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions) and 9 more.
Key specifications for 185429D146: Heat Transfer Method: INDIRECT; Effective Heat Transfer Surface Area: 6.1 SQUARE FEET; Style Designator: PLAIN "U" TUBE; Core Diameter: 6.4375 INCHES NOMINAL IN. 8 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.