The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-044-1858, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-044-1858 |
| Primary Part Number | A708 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Keyway Type | STRAIGHT |
| Keyway Depth | 0.203 INCHES NOMINAL IN |
| Hub Bore Diameter | 7.000 INCHES NOMINAL AND 1.500 INCHES NOMINAL IN |
| Hub Length | 0.937 INCHES NOMINAL AND 2.357 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 12.000 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Material Document and Classification | QQ-C-390,ALLOY 903 FED SPEC SINGLE MATERIAL RESPONSE |
| Keyway Quantity | 1 |
| Blade Quantity | 11 |
| Keyway Length | 1.812 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 903 |
| Rotation Direction for Which Designed | CLOCKWISE |
| Blade Type | FORWARD CURVE |
| 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 |
|---|---|
| A708 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 657D1339 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-044-1858 is a Impeller,pump,centrifugal, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-044-1858 has 1 manufacturer part number on file: A708 (Circor Naval Solutions Llc Dba Warren Pumps).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-551-5372. Verify interchangeability with system specifications before substitution.
Key specifications for A708: Keyway Type: STRAIGHT; Keyway Depth: 0.203 INCHES NOMINAL IN; Hub Bore Diameter: 7.000 INCHES NOMINAL AND 1.500 INCHES NOMINAL IN; Hub Length: 0.937 INCHES NOMINAL AND 2.357 INCHES NOMINAL IN. 17 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.