The Pump,rotary, cataloged under National Stock Number 4320-01-181-5634, 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. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Pump,rotary |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Komatsu America Corp. (CAGE 0SAT8); Dressta North America Ltd (CAGE 45RP7) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-181-5634 |
| Primary Part Number | 861100121 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dressta North America Ltd |
| 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 |
|---|---|
| 1270513H91 | Komatsu America Corp. (USA) |
| 861100121 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 942598C93 | 5/9 Secondary reference Komatsu American Intl Co |
| 127011H91 | 5/9 Secondary reference Komatsu American Intl Co |
| 1270513H91 | 3/9 Design control — primary reference Komatsu American Intl Co |
| 1270513H91 | 5/9 Secondary reference Dressta North America Ltd |
NSN 4320-01-181-5634 is a Pump,rotary, manufactured by Dressta North America Ltd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-181-5634 has 2 manufacturer part numbers on file: 1270513H91 (Komatsu America Corp.), 861100121 (Dressta North America Ltd).
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.