The Sleeve,shaft,pump, cataloged under National Stock Number 4320-01-128-9587, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Euramco Safety 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-128-9587 |
| Primary Part Number | 55-22055 PART 20 |
| Item Name | Sleeve,shaft,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Euramco Safety Inc |
| Status | ACTIVE |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| 55-22055 PART 20 PRIMARY | Euramco Safety Inc (USA) |
| Reference | Meaning |
|---|---|
| 55-22055 | D/9 Drawing number reference only Euramco Safety Inc |
NSN 4320-01-128-9587 is a Sleeve,shaft,pump, manufactured by Euramco Safety Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-128-9587 has 1 manufacturer part number on file: 55-22055 PART 20 (Euramco Safety Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4320-01-129-7787, 4320-01-130-1930, 4320-01-461-4601. Verify interchangeability with system specifications before substitution.
Key specifications for 55-22055 PART 20: End Item Identification: WORTHINGTON 4-LR-11 FOR SEAL CONVERSION; Material: NICKEL ALLOY OVERALL. 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.