The Hub,variable Speed, cataloged under National Stock Number 4920-00-939-9441, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Warner Electric Brake and Clutch Co Hq. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-939-9441 |
| Primary Part Number | 540-0313 |
| Item Name | Hub,variable Speed |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Warner Electric Brake and Clutch Co Hq |
| Status | ACTIVE |
| General Characteristics Item Description | 10.000 IN. LG IN |
| 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 |
|---|---|
| 540-0313 PRIMARY | Warner Electric Brake and Clutch Co Hq (USA) |
| Reference | Meaning |
|---|---|
| C670395 | 5/9 Secondary reference Warner Electric Brake and Clutch Co Hq |
| 670395 | 5/9 Secondary reference Warner Electric Brake and Clutch Co Hq |
NSN 4920-00-939-9441 is a Hub,variable Speed, manufactured by Warner Electric Brake and Clutch Co Hq, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-939-9441 has 1 manufacturer part number on file: 540-0313 (Warner Electric Brake and Clutch Co Hq).
Key specifications for 540-0313: General Characteristics Item Description: 10.000 IN. LG IN; End Item Identification: WARNER UNIT PB-1000. 1 specification is 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.