The Rotor,pump, cataloged under National Stock Number 4320-00-417-8331, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Hatch & Kirk, Inc.. 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through both NSN and commercial part number lookups. 30 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-417-8331 |
| Primary Part Number | AC-4641-1 |
| Item Name | Rotor,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Pump Design Control Activity | 16712 |
| 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 |
|---|---|
| AC-4641-1 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| NN25-10PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| 3N75PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| SG1773PC11 | 5/9 Secondary reference Circor Pumps North America Llc |
| NN25-1PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| 3N48ALT6PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| RS813FA1 | 5/9 Secondary reference Siemens Energy, Inc. |
| NN80PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| AC4641-1 | 5/9 Secondary reference Alfa Laval Inc. |
| 3N30PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| NN27-1PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| RS813FA1 | 5/9 Secondary reference Circor Pumps North America Llc |
| 1502 | 5/9 Secondary reference Alfa Laval Inc. |
| SG1773PC11 | 5/9 Secondary reference Siemens Energy, Inc. |
| NN63PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| AC-4641-1 | 5/9 Secondary reference Hatch and Kirk Inc Hk/ppi Div |
| 3N104PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| NN27-10PC1502 | 5/9 Secondary reference Alfa Laval Inc. |
| SG1771PC11 | 5/9 Secondary reference Siemens Energy, Inc. |
| NN25-2PC1052 | 5/9 Secondary reference Alfa Laval Inc. |
| I1502-81 | 5/9 Secondary reference Alfa Laval Inc. |
NSN 4320-00-417-8331 is a Rotor,pump, manufactured by Hatch & Kirk, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-417-8331 has 1 manufacturer part number on file: AC-4641-1 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-550-1426. Verify interchangeability with system specifications before substitution.
Key specifications for AC-4641-1: Pump Design Control Activity: 16712; Special Features: IDLER ROTOR. 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.