The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-01-699-2229, 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. The manufacturer of record is Littelfuse World Hq. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-699-2229 |
| Primary Part Number | AT-30-B |
| Item Name | Tachometer,mechanical,fixed Moun |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Littelfuse World Hq |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | 20700247 PART |
| Material | STEEL CORROSION RESISTING CASE |
| 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 |
|---|---|
| AT-30-B PRIMARY | Littelfuse World Hq (USA) |
| Reference | Meaning |
|---|---|
| AT-30-B | 5/9 Secondary reference Cole Hersee Company |
NSN 6680-01-699-2229 is a Tachometer,mechanical,fixed Moun, manufactured by Littelfuse World Hq, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-699-2229 has 1 manufacturer part number on file: AT-30-B (Littelfuse World Hq).
Key specifications for AT-30-B: Nondefinitive Spec/std Data: 20700247 PART; Special Features: SAE BRIGHT STAINLESS STEEL BEZEL; Part Name Assigned by Controlling Agency: TACHOMETER; Material: STEEL CORROSION RESISTING CASE. 2 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.