The Pump Unit,rotary, cataloged under National Stock Number 4320-01-547-4357, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4320-01-547-4357 |
| Primary Part Number | E-4744 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| 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 |
|---|---|
| BXL1-1/4NAF-NHROV | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| E-4744 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| E-4744 BXL1-1/4NAF-NHROV | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
NSN 4320-01-547-4357 is a Pump Unit,rotary, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-547-4357 has 3 manufacturer part numbers on file: BXL1-1/4NAF-NHROV (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-4744 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-4744 BXL1-1/4NAF-NHROV (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-548-5757. Verify interchangeability with system specifications before substitution.
Key specifications for E-4744: End Item Identification: PUMP ASSEMBLY, LUBE OIL. 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.