The Stage Piece,center, cataloged under National Stock Number 4320-01-025-7897, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-025-7897 |
| Primary Part Number | AZ4 |
| Item Name | Stage Piece,center |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| General Characteristics Item Description | CAST STEEL;TENSILE STRENGTH 126,000 PSI;BRINELL HARDNESS 350; YIELD STRENGTH 112,000 PSI |
| 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 |
|---|---|
| AZ4 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| N-17331 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| R-782 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-025-7897 is a Stage Piece,center, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-025-7897 has 1 manufacturer part number on file: AZ4 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for AZ4: General Characteristics Item Description: CAST STEEL;TENSILE STRENGTH 126,000 PSI;BRINELL HARDNESS 350; YIELD STRENGTH 112,000 PSI; End Item Identification: WARREN MODEL 2-TMH-4. 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.