The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-100-3291, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Frederick Custom Machining 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-100-3291 |
| Primary Part Number | 35YF |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Frederick Custom Machining Inc |
| Status | ACTIVE |
| Keyway Type | RECTANGULAR |
| Keyway Depth | 0.125 INCHES NOMINAL IN |
| Hub Bore Diameter | 0.812 INCHES NOMINAL AND 1.438 INCHES NOMINAL IN |
| Hub Length | 0.250 INCHES NOMINAL AND 0.438 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 6.500 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 1.000 INCHES NOMINAL AND 0.938 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Keyway Length | 1.125 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.188 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | CLOCKWISE |
| Blade Type | FORWARD 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 |
|---|---|
| 35YF PRIMARY | Frederick Custom Machining Inc (USA) |
NSN 4320-00-100-3291 is a Impeller,pump,centrifugal, manufactured by Frederick Custom Machining Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-100-3291 has 1 manufacturer part number on file: 35YF (Frederick Custom Machining Inc).
Key specifications for 35YF: Keyway Type: RECTANGULAR; Keyway Depth: 0.125 INCHES NOMINAL IN; Hub Bore Diameter: 0.812 INCHES NOMINAL AND 1.438 INCHES NOMINAL IN; Hub Length: 0.250 INCHES NOMINAL AND 0.438 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.