The Pump Unit,centrifugal, cataloged under National Stock Number 4320-00-451-5908, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-451-5908 |
| Primary Part Number | 73C65 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Discharge Connection Quantity | 4 |
| Intake Connection Type | THREADED INTERNAL |
| Current Type | DC |
| Pumping Element Operating Position | HORIZONTAL |
| Voltage in Volts | 28.0 |
| Prime Mover Quantity | 1 |
| Pump Quantity | 1 |
| Discharge Connection Thread Size and Series/type Designator | 0.125-27 NPT |
| Intake Connection Thread Size and Series/type Designator | 0.437-20 UNF |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 2 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Mounting Type | BASE |
| Centrifugal Pump Design | RADIAL FLOW |
| Current Rating in Amps | 1.7 |
| 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 |
|---|---|
| 73C65 PRIMARY | Grimes Aerospace Company (USA) |
| 70D10 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 206-073-900-1 | 5/2 Secondary reference U.S. Government activity |
| 206-073-900-3 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4320-00-451-5908 is a Pump Unit,centrifugal, manufactured by Grimes Aerospace Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-451-5908 has 2 manufacturer part numbers on file: 73C65 (Grimes Aerospace Company), 70D10 (Grimes Aerospace Company).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-138-0945. Verify interchangeability with system specifications before substitution.
Key specifications for 73C65: Discharge Connection Quantity: 4; Intake Connection Type: THREADED INTERNAL; Current Type: DC; Pumping Element Operating Position: HORIZONTAL. 16 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.