The Rotor,pump, cataloged under National Stock Number 4320-01-040-1112, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Pumps North America Llc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-040-1112 |
| Primary Part Number | RSC275AJ |
| Item Name | Rotor,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Rotor Design | SCREW |
| Material | STEEL |
| 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 |
|---|---|
| RSC275AJ PRIMARY | Circor Pumps North America Llc (USA) |
| SF10163PC43 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SF-10163 | 5/9 Secondary reference Siemens Energy, Inc. |
| SF-10163 | D/9 Drawing number reference only Circor Pumps North America Llc |
| SF10163PC43 | 5/9 Secondary reference Siemens Energy, Inc. |
| RSC275AJ | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4320-01-040-1112 is a Rotor,pump, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-040-1112 has 2 manufacturer part numbers on file: RSC275AJ (Circor Pumps North America Llc), SF10163PC43 (Circor Pumps North America Llc).
5 possible matches (shared part number, not a government interchangeability claim): 4320-01-040-1113, 4320-01-040-1366, 4320-01-241-4142. Verify interchangeability with system specifications before substitution.
Key specifications for RSC275AJ: Rotor Design: SCREW; Special Features: IDLER ROTOR; Material: STEEL. 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.