The Pump Unit,rotary, cataloged under National Stock Number 4320-01-138-0131, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-138-0131 |
| Primary Part Number | BX1NF-DM |
| 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) |
| Part Number | Manufacturer |
|---|---|
| E4381 OPTION 8 | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| BX1NF-DM PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| E-4381 | C/1 Advisory reference — outside the item-of-supply concept Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 4320-01-138-0131 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 4320-01-138-0131 has 2 manufacturer part numbers on file: E4381 OPTION 8 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), BX1NF-DM (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
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.