The Pump,rotary, cataloged under National Stock Number 4320-01-640-6903, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Warren Rupp, Inc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-640-6903 |
| Primary Part Number | HDB40A-SB6SS |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Warren Rupp, Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 2 |
| Pumping Element Operating Position | VERTICAL |
| Discharge Connection Thread Size and Series/type Designator | HDB4-A TYPE 6 BSP.TR INT |
| Intake Connection Thread Size and Series/type Designator | HDB4-A TYPE 6 BSP.TR INT |
| Discharge Pressure | ERR-060 |
| Maximum Discharge Flow Rate | 90.0 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 2 |
| Material | STEEL PUMP BASIC |
| Media for Which Designed | AIR OR NITROGEN, LIQUID |
| Mounting Type | BASE |
| Operation Method | POWERED |
| Total Head | 0.289 FEET FT |
| 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 |
|---|---|
| HDB40A-SB6SS PRIMARY | Warren Rupp, Inc (USA) |
NSN 4320-01-640-6903 is a Pump,rotary, manufactured by Warren Rupp, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-640-6903 has 1 manufacturer part number on file: HDB40A-SB6SS (Warren Rupp, Inc).
Key specifications for HDB40A-SB6SS: Discharge Connection Quantity: 2; Pumping Element Operating Position: VERTICAL; Discharge Connection Thread Size and Series/type Designator: HDB4-A TYPE 6 BSP.TR INT; Intake Connection Thread Size and Series/type Designator: HDB4-A TYPE 6 BSP.TR INT. 13 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.