The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-423-8727, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Ampco Pumps Company Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-423-8727 |
| Primary Part Number | BI8200011 6-1/2IN |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Ampco Pumps Company Llc |
| Status | ACTIVE |
| Keyway Type | STRAIGHT |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 6.500 INCHES MAXIMUM IN |
| Mounting Method | KEY AND THREAD |
| Keyway Quantity | 1 |
| Blade Quantity | 5 |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| BI8200011 6-1/2IN PRIMARY | Ampco Pumps Company Llc (USA) |
| Reference | Meaning |
|---|---|
| BI8200011 | 5/9 Secondary reference Ampco Metal Inc. Dba Ampco Metal Inc |
NSN 4320-01-423-8727 is a Impeller,pump,centrifugal, manufactured by Ampco Pumps Company Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-423-8727 has 1 manufacturer part number on file: BI8200011 6-1/2IN (Ampco Pumps Company Llc).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-426-2372. Verify interchangeability with system specifications before substitution.
Key specifications for BI8200011 6-1/2IN: Keyway Type: STRAIGHT; Design Type: SINGLE WIDTH; Overall Diameter: 6.500 INCHES MAXIMUM IN; Mounting Method: KEY AND THREAD. 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.