The Rotor and Shaft Pump Assembly, cataloged under National Stock Number 4320-01-418-7105, 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. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-418-7105 |
| Primary Part Number | 265177 |
| Item Name | Rotor and Shaft Pump Assembly |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Shaft Largest Diameter | 1.771 INCHES NOMINAL IN |
| Rotor Diameter | 5.984 INCHES NOMINAL IN |
| Features Provided | KEYWAY AND LEFT HAND AND SLOTTED |
| Pump Design Control Activity | 07524 |
| Pump Model Number for Which Designed | BXL2-1/2NAFJM1 |
| Material | COPPER ALLOY AND STEEL CORROSION RESISTING |
| 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 |
|---|---|
| E-4658 ITEM 13 | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| 265177 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| E-4658 | D/9 Drawing number reference only Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 4320-01-418-7105 is a Rotor and Shaft Pump Assembly, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-418-7105 has 2 manufacturer part numbers on file: E-4658 ITEM 13 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 265177 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-418-7487. Verify interchangeability with system specifications before substitution.
Key specifications for 265177: Shaft Largest Diameter: 1.771 INCHES NOMINAL IN; Rotor Diameter: 5.984 INCHES NOMINAL IN; Overall Length: 15.562 INCHES NOMINAL IN; Features Provided: KEYWAY AND LEFT HAND AND SLOTTED. 6 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.