The Shaft,transmission,pump, cataloged under National Stock Number 4320-01-050-3501, 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. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-050-3501 |
| Primary Part Number | S1401DA |
| Item Name | Shaft,transmission,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S1401DA PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SF-10524-ITEM 2X3X60 | 5/9 Secondary reference Circor Pumps North America Llc |
| S1401DA | 5/9 Secondary reference Siemens Energy, Inc. |
| SF-10524-ITEM 2X3X60 | 5/9 Secondary reference Siemens Energy, Inc. |
| SF-10524 | 5/9 Secondary reference Siemens Energy, Inc. |
| SF-10524 | D/9 Drawing number reference only Circor Pumps North America Llc |
| SF-10524-ITEM 2 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
| S-104DA | C/1 Advisory reference — outside the item-of-supply concept Circor Pumps North America Llc |
NSN 4320-01-050-3501 is a Shaft,transmission,pump, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-050-3501 has 1 manufacturer part number on file: S1401DA (Circor Pumps North America Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-063-3859. Verify interchangeability with system specifications before substitution.
Key specifications for S1401DA: Special Features: W/PISTON ASSEMBLY. 0 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.
NSN 4320-01-050-3501 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.