PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RS50Tachometer,mechanical,fixed Moun

Wisconsin Motors, Llc · NSN 6680-00-530-4531 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-530-4531 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-530-4531. Primary manufacturer part number: RS50.
Features
  • Tachometer,mechanical,fixed Moun — FSC 6680
  • Material: STEEL CASE
  • Totalizing Mechanism: PROVIDED
  • Case Shape: ROUND
  • Scale Quantity: 1
  • Scale Measurement Unit: REVOLUTIONS PER MINUTE
  • Unit Type: MAGNETIC
  • Pointer Color: WHITE
Applications
  • Applications requiring Steel Case construction
General Description

The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-00-530-4531, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-530-4531
Primary Part NumberRS50
Item NameTachometer,mechanical,fixed Moun
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
MaterialSTEEL CASE
Totalizing MechanismPROVIDED
Case ShapeROUND
Scale Quantity1
Scale Measurement UnitREVOLUTIONS PER MINUTE
Unit TypeMAGNETIC
Pointer ColorWHITE
Pointer Quantity1
Pointer FinishRADIUM
Scale FinishRADIUM
Shaft Rotation DirectionCLOCKWISE
Operating Range+0.0 TO 4500.0 REVOLUTIONS PER MINUTE
Dial Background ColorBLACK
Dial Quantity1
Minor Graduation ColorWHITE
Ahead-Astern SemaphoreNOT PROVIDED
Mounting TypePANEL
Scale Smallest Increment100.0 REVOLUTIONS PER MINUTE
Pointer Movement DirectionCOUNTERCLOCKWISE
Mounting Feature TypeFLUSH
Drive Connection TypeFLEXIBLE
Overall Diameter2.843 INCHES NOMINAL IN
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SPECIAL FEATURES
Criticality Code JustificationFEAT AND AKCT
Graduation Unit1.0 HOURS OPERATED
Scale Measurement Range+0.0 TO 45.0
Dial IlluminationNOT PROVIDED
Major Graduation ColorWHITE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6680-00-514-4094RS50B INTERCHANGEABLE
Tachometer,mechanical,fixed Moun
Wisconsin Motors, Llc
6680-00-542-1273 INTERCHANGEABLE
Tachometer,mechanical,fixed Moun
6680-00-634-9386551AMB-5 INTERCHANGEABLE
Tachometer,mechanical,fixed Moun
Stewart-Warner Corporation
6680-00-696-3818 INTERCHANGEABLE
Tachometer,mechanical,fixed Moun
6625-01-079-00032001-SP443 INTERCHANGEABLE
Generator,sweep
Wavetek Rf Products, Inc
5325-01-095-1101RS-50 INTERCHANGEABLE
Ring,retaining
Spirolox Inc
5325-01-251-7448RS-50 INTERCHANGEABLE
Ring,retaining
Spirolox Inc
5975-01-387-5591RS-50 INTERCHANGEABLE
Frame,round Transit
Roxtec Inc
5935-01-505-1252RS-50 INTERCHANGEABLE
Clamp,cable,electrical Connector
Century Fasteners Corp. Dba Century Fasteners Corp
6035-01-507-7395RS50 INTERCHANGEABLE
Illuminator,fiber Optic
U.s. Pioneer, L.l.c.
Cross-Reference Index
Part NumberManufacturer
RS50 Wisconsin Motors, Llc (USA)
RS50E Wisconsin Motors, Llc (USA)
551-AMB Stewart-Warner Corporation (USA)
EX28630 Stewart-Warner Corporation (USA)
567L Stewart-Warner Corporation (USA)
19A10157 Napco International Llc Dba Napco International Inc (USA)
Related Parts
6680-00-514-4094INTERCHANGEABLE
TACHOMETER,MECHANICAL,FIXED MOUN
RS50B
6680-00-542-1273INTERCHANGEABLE
TACHOMETER,MECHANICAL,FIXED MOUN
6680-00-634-9386INTERCHANGEABLE
TACHOMETER,MECHANICAL,FIXED MOUN
551AMB-5
6680-00-696-3818INTERCHANGEABLE
TACHOMETER,MECHANICAL,FIXED MOUN
6625-01-079-0003INTERCHANGEABLE
GENERATOR,SWEEP
2001-SP443
5325-01-095-1101INTERCHANGEABLE
RING,RETAINING
RS-50
5325-01-251-7448INTERCHANGEABLE
RING,RETAINING
RS-50
5975-01-387-5591INTERCHANGEABLE
FRAME,ROUND TRANSIT
RS-50
5935-01-505-1252INTERCHANGEABLE
CLAMP,CABLE,ELECTRICAL CONNECTOR
RS-50
6035-01-507-7395INTERCHANGEABLE
ILLUMINATOR,FIBER OPTIC
RS50

Frequently Asked Questions

What is NSN 6680-00-530-4531?

NSN 6680-00-530-4531 is a Tachometer,mechanical,fixed Moun, manufactured by Wisconsin Motors, Llc, classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-530-4531?

NSN 6680-00-530-4531 has 6 cross-referenced part numbers: RS50 (Wisconsin Motors, Llc), RS50E (Wisconsin Motors, Llc), 551-AMB (Stewart-Warner Corporation), EX28630 (Stewart-Warner Corporation), 567L (Stewart-Warner Corporation) and 1 more.

What NSN replaces 6680-00-530-4531?

There are 10 known substitutes for 6680-00-530-4531: 6680-00-514-4094, 6680-00-542-1273, 6680-00-634-9386 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RS50?

Key specifications for RS50: Material: STEEL CASE; Totalizing Mechanism: PROVIDED; Case Shape: ROUND; Scale Quantity: 1. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-530-4531 still in active supply?

NSN 6680-00-530-4531 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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