The Tool Set,tachometer Brush, cataloged under National Stock Number 4920-01-032-3091, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-032-3091 |
| Item Name | Tool Set,tachometer Brush |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Reference Data and Literature | SERD NO. 3264 |
| Functional Description | USED TO HONE THE TACHOMETER BRUSHES AND COMPRESS THE BRUSH SPRINGS DURING MAINTENANCE OF THE TACHOMETER, HUGES P/N 253963-1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3173441-100 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-032-3091 is a Tool Set,tachometer Brush, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-032-3091: Overall Diameter: 3.000 INCHES NOMINAL IN; Reference Data and Literature: SERD NO. 3264; Overall Length: 6.000 INCHES NOMINAL IN; Functional Description: USED TO HONE THE TACHOMETER BRUSHES AND COMPRESS THE BRUSH SPRINGS DURING MAINTENANCE OF THE TACHOMETER, HUGES P/N 253963-1. 3 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.