The Piston,hydraulic Motor-Pump, cataloged under National Stock Number 4320-01-419-0530, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Mac Taggart, Scott & Co Ltd. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-419-0530 |
| Primary Part Number | BM46982 |
| Item Name | Piston,hydraulic Motor-Pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Mac Taggart, Scott & Co Ltd |
| Status | ACTIVE |
| General Characteristics Item Description | HEAT TREATED |
| Material | STEEL |
| 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 |
|---|---|
| BM46982 PRIMARY | Mac Taggart, Scott & Co Ltd (USA) |
| EF49207 ITEM 14 | Mac Taggart, Scott & Co Ltd (USA) |
| Reference | Meaning |
|---|---|
| EF49207 | D/9 Drawing number reference only Mac Taggart, Scott & Co Ltd |
NSN 4320-01-419-0530 is a Piston,hydraulic Motor-Pump, manufactured by Mac Taggart, Scott & Co Ltd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-419-0530 has 2 manufacturer part numbers on file: BM46982 (Mac Taggart, Scott & Co Ltd), EF49207 ITEM 14 (Mac Taggart, Scott & Co Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2825-01-450-3567. Verify interchangeability with system specifications before substitution.
Key specifications for BM46982: General Characteristics Item Description: HEAT TREATED; Special Features: USED ON MACTAGGERT AND CO. MODEL HMA0.8 HYDRAULIC MOTOR; End Item Identification: SEAWOLF CLASS SSN; Material: STEEL. 2 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.