The Indicator,electrical Tachometer, cataloged under National Stock Number 6680-01-653-3718, 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 Maxima Technologies & Systems Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-653-3718 |
| Primary Part Number | 100238 |
| Item Name | Indicator,electrical Tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Maxima Technologies & Systems Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 THREADED STUD(S) |
| Mounting Arrangement Style | TWO HOLE/STUD |
| Scale Marking | LINED INCREMENTS |
| Length | 3.477 INCHES NOMINAL IN |
| Current Type | DC |
| Electrical Connection Quantity | 3 |
| Mounting Stud Diameter | 0.1640 INCHES NOMINAL IN |
| DC Voltage Rating | 24.0 VOLTS NOMINAL |
| Scale Range | +0.0 TO 35.0 ENGINE REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE |
| Diameter | 3.36 INCHES NOMINAL IN |
| Scale Marking Transparency | NONLUMINOUS |
| Dial Outside Diameter | 3.582 INCHES NOMINAL IN |
| Pointer Type | INDICATING SINGLE POINTER |
| Presentation Type | DIAL AND TOTALIZING COUNTER |
| Pointer Quantity | 1 |
| Mounting Stud Length | 0.478 INCHES NOMINAL IN |
| Depth | 2.38 INCHES NOMINAL IN |
| Pointer Purpose | INDICATES RPM |
| 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 |
|---|---|
| 100238 PRIMARY | Maxima Technologies & Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 0418C08-0177-01 | 7/2 Vendor item drawing reference The Entwistle Company Llc |
| 947170 | 5/9 Secondary reference Beede Electrical Instrument Co. Inc. |
NSN 6680-01-653-3718 is a Indicator,electrical Tachometer, manufactured by Maxima Technologies & Systems Llc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-653-3718 has 1 manufacturer part number on file: 100238 (Maxima Technologies & Systems Llc).
Key specifications for 100238: Mounting Facility Type and Quantity: 2 THREADED STUD(S); Mounting Arrangement Style: TWO HOLE/STUD; Scale Marking: LINED INCREMENTS; Length: 3.477 INCHES NOMINAL IN. 18 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.