The Pump,hydraulic Ram,hand Driven, cataloged under National Stock Number 4320-01-442-4020, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Ralston Instruments, Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-442-4020 |
| Primary Part Number | QTHP-0000 |
| Item Name | Pump,hydraulic Ram,hand Driven |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Ralston Instruments, Llc |
| Status | ACTIVE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Operating Speed Quantity | 1 |
| Hose | INCLUDED |
| 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 |
|---|---|
| QTHP-0000 PRIMARY | Ralston Instruments, Llc (USA) |
| Reference | Meaning |
|---|---|
| HPGV 0000 | 5/9 Secondary reference Ralston Instruments, Llc |
NSN 4320-01-442-4020 is a Pump,hydraulic Ram,hand Driven, manufactured by Ralston Instruments, Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-442-4020 has 1 manufacturer part number on file: QTHP-0000 (Ralston Instruments, Llc).
Key specifications for QTHP-0000: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Operating Speed Quantity: 1; Hose: INCLUDED; Special Features: INTERNAL PARTS ARE BRASS, ALUMINUM, AND STAINLESS STEEL WITH BUNA-N O-RINGS; FLUID RESERVOIR IS LEXAN; MEDIA CAN BE OIL, WATER OR ALCOHOL; COMES WITH PRESSURE RELIEF VALVE AND CHECK VALVES. 3 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.