The Pump,reciprocating, cataloged under National Stock Number 4320-01-475-3961, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-01-475-3961 |
| Primary Part Number | 66611B-244-C |
| Item Name | Pump,reciprocating |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Type | DIAPHRAGM |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Suction Lift | 0.000 FEET FT |
| Reciprocating Stroke Type | FIXED |
| Operating Speed at Rated Capacity | 22.0 STROKES PER MINUTE |
| Pump Reciprocating Design | DOUBLE ACTING |
| 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 | PRESSURE COMPENSATION |
| Discharge Pressure | 20.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Cylinder Quantity | 2 |
| Maximum Discharge Flow Rate | 35.0 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED EXTERNAL |
| Intake Connection Quantity | 1 |
| Material | STEEL PUMP BASIC |
| Mounting Type | FRAME |
| Operation Method | POWERED |
| Total Head | 15.000 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 |
|---|---|
| 66611B-244-C PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division (USA) |
| Reference | Meaning |
|---|---|
| 66611B-244-C | 3/9 Design control — primary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
NSN 4320-01-475-3961 is a Pump,reciprocating, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-475-3961 has 1 manufacturer part number on file: 66611B-244-C (Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division).
Key specifications for 66611B-244-C: Discharge Connection Quantity: 1; Pumping Element Type: DIAPHRAGM; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL. 21 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.