The Heat Exchanger 5th, cataloged under National Stock Number 4420-01-571-0318, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-571-0318 |
| Primary Part Number | D3358 ITEM 27 OXYGEN CLEANCP |
| Item Name | Heat Exchanger 5th |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| D3358 ITEM 27 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| XM71-7738 OXYGEN CLEAN | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| D3358 ITEM 27 OXYGEN CLEAN | 5/1 Secondary reference Rix Industries |
| 71-7738 OXYGEN CLEAN | 3/9 Design control — primary reference Rix Industries |
| XM71-7738 | 3/1 Design control — primary reference Rix Industries |
| 71-7738 OXYGEN CLEAN CP | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4420-01-571-0318 is a Heat Exchanger 5th, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-571-0318 has 2 manufacturer part numbers on file: D3358 ITEM 27 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg), XM71-7738 OXYGEN CLEAN (Naval Inventory Control Point Mechanicsburg).
Key specifications for D3358 ITEM 27 OXYGEN CLEANCP: Criticality Code Justification: ZZZY; Special Features: COMPRESSOR NI. INAVY IS HEAT EXCHANGER 5TH STAGE; Part Name Assigned by Controlling Agency: HX 5TH STAGE; End Item Identification: COMPRESSOR NITROGEN. 2 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.