The Power Unit,tachometer, cataloged under National Stock Number 4920-00-034-7144, 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 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-034-7144 |
| Item Name | Power Unit,tachometer |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | BLACK MOLDED BAKELITE BASE,RED MOLDED BAKELITE COVER,6.750 IN. O/ALG,3.562 IN. W,2.468 IN. H,TWO 0.281 IN. BY 0.312 IN. MTG SLOTS 6.000IN. C TO C,DRIVE RATIO 1 TO 1 IN |
| 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 |
|---|---|
| 2-1038-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-00-034-7144 is a Power Unit,tachometer, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-176-4315. Verify interchangeability with system specifications before substitution.
Key specifications for 4920-00-034-7144: General Characteristics Item Description: BLACK MOLDED BAKELITE BASE,RED MOLDED BAKELITE COVER,6.750 IN. O/ALG,3.562 IN. W,2.468 IN. H,TWO 0.281 IN. BY 0.312 IN. MTG SLOTS 6.000IN. C TO C,DRIVE RATIO 1 TO 1 IN. 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.