The Rod Subassy,protector, cataloged under National Stock Number 4420-01-400-2671, 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 Fluid Handling Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4420-01-400-2671 |
| Primary Part Number | 4 590 04 003 001 |
| Item Name | Rod Subassy,protector |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| General Characteristics Item Description | ZINC PROTECTOR ROD AND 70/30 COPPER/NICKEL SUPPORT PLUG |
| 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 |
|---|---|
| 4 590 04 003 001 PRIMARY | Fluid Handling Llc (USA) |
| 5 131 15 108 002-13 | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 5 131 15 108 002-13 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 5 131 15 108 003 PC 9 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 4 590 04 003 001 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 5 131 15 108 002 | D/9 Drawing number reference only Fluid Handling Llc |
| 5 131 15 108 002 | D/9 Drawing number reference only Itt Corporation Dba Itt Standard |
| 5 131 15 108 003 PC 9 | C/1 Advisory reference — outside the item-of-supply concept Itt Corporation Dba Itt Standard |
NSN 4420-01-400-2671 is a Rod Subassy,protector, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-400-2671 has 2 manufacturer part numbers on file: 4 590 04 003 001 (Fluid Handling Llc), 5 131 15 108 002-13 (Fluid Handling Llc).
1 possible match (shared part number, not a government interchangeability claim): 4420-01-407-1273. Verify interchangeability with system specifications before substitution.
Key specifications for 4 590 04 003 001: Overall Height: 2.750 INCHES NOMINAL IN; General Characteristics Item Description: ZINC PROTECTOR ROD AND 70/30 COPPER/NICKEL SUPPORT PLUG; Overall Length: 7.000 INCHES NOMINAL IN; Overall Width: 2.750 INCHES NOMINAL IN. 1 specification is 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.