The Pump,rotary, cataloged under National Stock Number 4320-01-178-3407, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Mechanical Tool and Engineering Co. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-178-3407 |
| Primary Part Number | S400L-1670 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Mechanical Tool and Engineering Co |
| Status | ACTIVE |
| Discharge Connection Quantity | 2 |
| Intake Connection Type | RECTANGULAR FLANGE |
| Pumping Element Operating Position | HORIZONTAL |
| Drive Shaft Length | 1.220 INCHES NOMINAL IN |
| Drive Connection Type | CLOSE COUPLED |
| Operating Speed at Rated Capacity | 3120.0 REVOLUTIONS PER MINUTE |
| Drive Shaft Type | SPLINED, INVOLUTE EXTERNAL |
| Volume Control Type | ROTARY |
| Discharge Pressure | 50.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME |
| Maximum Discharge Flow Rate | 20.0 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | RECTANGULAR FLANGE |
| Intake Connection Quantity | 2 |
| Media for Which Designed | OIL |
| 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 |
|---|---|
| S400L-1670 PRIMARY | Mechanical Tool and Engineering Co (USA) |
| X-216895 | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
NSN 4320-01-178-3407 is a Pump,rotary, manufactured by Mechanical Tool and Engineering Co, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-178-3407 has 2 manufacturer part numbers on file: S400L-1670 (Mechanical Tool and Engineering Co), X-216895 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for S400L-1670: Discharge Connection Quantity: 2; Intake Connection Type: RECTANGULAR FLANGE; Pumping Element Operating Position: HORIZONTAL; Drive Shaft Length: 1.220 INCHES NOMINAL IN. 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.