The Pump,rotary, cataloged under National Stock Number 4320-00-497-6504, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dressta North America Ltd. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-497-6504 |
| Primary Part Number | 56789 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Intake Connection Type | THREADED INTERNAL |
| Drive Shaft Length | 0.625 INCHES NOMINAL IN |
| Drive Shaft Type | WOODRUFF KEYWAY |
| Intake Connection Thread Size and Series/type Designator | 0.625-18 UNF |
| Drive Shaft End Diameter | 0.670 INCHES NOMINAL IN |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Operation Method | POWERED |
| 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 |
|---|---|
| 56789 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| ER120832 | 5/9 Secondary reference U.S. Government activity |
| B56789 | 5/9 Secondary reference Komatsu America Corporation |
NSN 4320-00-497-6504 is a Pump,rotary, manufactured by Dressta North America Ltd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-497-6504 has 1 manufacturer part number on file: 56789 (Dressta North America Ltd).
3 possible matches (shared part number, not a government interchangeability claim): 4320-00-718-3584, 5330-01-361-6957, 6760-01-684-8854. Verify interchangeability with system specifications before substitution.
Key specifications for 56789: Intake Connection Type: THREADED INTERNAL; Drive Shaft Length: 0.625 INCHES NOMINAL IN; Drive Shaft Type: WOODRUFF KEYWAY; Intake Connection Thread Size and Series/type Designator: 0.625-18 UNF. 8 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.