The Pump,rotary, cataloged under National Stock Number 4320-01-127-2597, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. Government technical data includes 14 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 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 | 4320-01-127-2597 |
| Primary Part Number | AP35B1B1A3L16.5 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Operating Position | VERTICAL |
| Drive Shaft Length | 1.240 INCHES NOMINAL IN |
| Drive Connection Type | GEAR |
| Operating Speed at Rated Capacity | 1780.0 REVOLUTIONS PER MINUTE |
| Discharge Connection Thread Size and Series/type Designator | 0.375-16 UNIFIED NATIONAL COARSE (UNC) |
| Drive Shaft Type | SPLINED, INVOLUTE EXTERNAL |
| Discharge Pressure | 500.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME |
| Maximum Discharge Flow Rate | 25.1 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | THREADED INTERNAL |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | COUNTERCLOCKWISE |
| 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 |
|---|---|
| AP35B1B1A3L16.5 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| 10158959 | Us Army Aviation and Missile Command (USA) |
NSN 4320-01-127-2597 is a Pump,rotary, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-127-2597 has 2 manufacturer part numbers on file: AP35B1B1A3L16.5 (David Brown Hydraulics Inc Dba Hydreco), 10158959 (Us Army Aviation and Missile Command).
1 possible match (shared part number, not a government interchangeability claim): 2915-01-139-7042. Verify interchangeability with system specifications before substitution.
Key specifications for AP35B1B1A3L16.5: Discharge Connection Quantity: 1; Pumping Element Operating Position: VERTICAL; Drive Shaft Length: 1.240 INCHES NOMINAL IN; Drive Connection Type: GEAR. 14 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.