The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-532-5543, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is A W Chesterton Co Div Sealing Device Division. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-532-5543 |
| Primary Part Number | 1628932 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | A W Chesterton Co Div Sealing Device Division |
| Status | ACTIVE |
| 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 |
|---|---|
| 1628932 | A W Chesterton Co Div Sealing Device Division (USA) |
| 628932 | A W Chesterton Co Div Sealing Device Division (USA) |
| Reference | Meaning |
|---|---|
| 628932 | 3/9 Design control — primary reference Blackmer System One, Inc. Div Blackmer System One, Inc. |
NSN 4320-01-532-5543 is a Pump Unit,centrifugal, manufactured by A W Chesterton Co Div Sealing Device Division, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-532-5543 has 2 manufacturer part numbers on file: 1628932 (A W Chesterton Co Div Sealing Device Division), 628932 (A W Chesterton Co Div Sealing Device Division).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-689-5657. Verify interchangeability with system specifications before substitution.
Key specifications for 1628932: End Item Identification: PUMP UNIT,CENTRIFUGAL. 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.
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.