The Drive Housing,tachometer, cataloged under National Stock Number 6680-01-191-4979, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-191-4979 |
| Item Name | Drive Housing,tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| 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 |
|---|---|
| RW1/820357-2 | C/1 Advisory reference — outside the item-of-supply concept David Brown Gear Systems Limited |
| RW1/820459 PC4 | 5/9 Secondary reference David Brown Special Products Ltd |
| RW1/820357-2 | 3/9 Design control — primary reference David Brown Special Products Ltd |
| RW1/820459 PC4 | C/1 Advisory reference — outside the item-of-supply concept David Brown Gear Systems Limited |
NSN 6680-01-191-4979 is a Drive Housing,tachometer, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
Key specifications for 6680-01-191-4979: End Item Identification: ENGLISH ELECTRIC CORP,GEAR BOX. 0 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.