The Pump,rotary, cataloged under National Stock Number 4320-01-377-6668, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-377-6668 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Operating Speed at Rated Capacity | 1200.0 REVOLUTIONS PER MINUTE |
| Control Location | CENTER |
| Discharge Connection Thread Size and Series/type Designator | 1.000-11-1/2 NPT |
| Intake Connection Thread Size and Series/type Designator | 1.000-11-1/2 NPT |
| Volume Control Type | ROTARY |
| Discharge Pressure | 500.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Maximum Discharge Flow Rate | 12.0 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | CLOCKWISE |
| 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 |
| Reference | Meaning |
|---|---|
| H12-P-40B1 | 5/9 Secondary reference Concentric Rockford Inc |
| H12-P-40B1 | 3/9 Design control — primary reference Walz and Krenzer Inc |
| H12-P-40B1 | 3/2 Design control — primary reference U.S. Government activity |
| H12-P-40B3 | C/1 Advisory reference — outside the item-of-supply concept Concentric Rockford Inc |
NSN 4320-01-377-6668 is a Pump,rotary, classified under FSC 4320, Power and Hand Pumps. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-437-2825. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-377-6668: Discharge Connection Quantity: 1; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL; Operating Speed at Rated Capacity: 1200.0 REVOLUTIONS PER MINUTE. 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.