The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-374-2811, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is John Reiner & Co. Inc.. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-00-374-2811 |
| Primary Part Number | D4CM1A1 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | John Reiner & Co. Inc. |
| Status | ACTIVE |
| Keyway Type | RECTANGULAR |
| Keyway Depth | 0.125 INCHES NOMINAL IN |
| Hub Bore Diameter | 4.688 INCHES NOMINAL AND 2.000 INCHES NOMINAL IN |
| Hub Length | 0.812 INCHES NOMINAL AND 0.688 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 11.750 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 1.375 INCHES NOMINAL AND 0.875 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Keyway Length | 2.000 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.250 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Blade Type | BACKWARD CURVE |
| 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 |
|---|---|
| D4CM1A1 | John Reiner & Co. Inc. (USA) |
| Reference | Meaning |
|---|---|
| D8293-3-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-00-374-2811 is a Impeller,pump,centrifugal, manufactured by John Reiner & Co. Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-374-2811 has 1 manufacturer part number on file: D4CM1A1 (John Reiner & Co. Inc.).
Key specifications for D4CM1A1: Keyway Type: RECTANGULAR; Keyway Depth: 0.125 INCHES NOMINAL IN; Hub Bore Diameter: 4.688 INCHES NOMINAL AND 2.000 INCHES NOMINAL IN; Hub Length: 0.812 INCHES NOMINAL AND 0.688 INCHES NOMINAL IN. 17 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.