PartsTable TECHNICAL DATA SHEET
NSN 6680-00-398-9705Government record, cited

Tachometer, Mechanical, Fixed Moun6680-00-398-9705

NSN 6680-00-398-9705 · NIIN 003989705 · Part number 156646
Cummins Inc. · FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 15434
Government record, cited
NSN 6680-00-398-9705 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-398-9705. Manufacturer of record part number: 156646.
Also searched as  6680-00-398-9705 · 6680003989705 · NIIN 003989705 · 00-398-9705 · FSC 6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments · CAGE 15434 · 156646 · 6469168 · 6469168
Nearby stock numbers  ·
Features
  • Tachometer,mechanical,fixed Moun — FSC 6680
  • Scale Quantity: 2
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Cummins Inc.
Identification
  • NSN: 6680-00-398-9705
  • NIIN: 003989705
  • FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
  • FSG: 66 — Instruments and Laboratory Equipment
  • Primary part number: 156646
  • Manufacturer: Cummins Inc.
General Description

The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-00-398-9705, 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 Cummins Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications
ParameterValue
NSN6680-00-398-9705
Primary Part Number156646
Item NameTachometer,mechanical,fixed Moun
FSC / FSG6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
ManufacturerCummins Inc.
StatusACTIVE
Scale Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
156646 PRIMARY Cummins Inc. (USA)
6469168 General Motors Llc Dba General Motors Llc (USA)
Reference documents
ReferenceMeaning
6469168 5/9 Secondary reference
General Motors Llc Dba General Motors
No interchangeability data on file.
Other items in FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6680-00-000-0189
TRANSMITTER,LIQUID QUANTITY
6680-00-001-1478
GAGE ROD-CAP,LIQUID LEVEL
6680-00-001-1502
6680-00-001-1502 · Item name not on file
6680-00-001-1506
6680-00-001-1506 · Item name not on file
6680-00-001-1511
GAGE ROD,LIQUID LEVEL
6680-00-001-3672
COUNTER,ROTATING
6680-00-001-3675
INDICATOR,SIGHT,LIQUID
6680-00-001-4170
COUNTER,ROTATING

Frequently Asked Questions

What is NSN 6680-00-398-9705?

NSN 6680-00-398-9705 is a Tachometer,mechanical,fixed Moun, manufactured by Cummins Inc., classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.

What part numbers are listed for NSN 6680-00-398-9705?

NSN 6680-00-398-9705 has 2 manufacturer part numbers on file: 156646 (Cummins Inc.), 6469168 (General Motors Llc Dba General Motors Llc).

What are the specifications of 156646?

Key specifications for 156646: Scale Quantity: 2. 1 specification is documented in the U.S. Government catalog.

Is NSN 6680-00-398-9705 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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