PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M1200BGenerator,tachometer

Dynalec Corporation · NSN 6680-00-557-5328 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-557-5328 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-557-5328. Primary manufacturer part number: M1200B.
Features
  • Generator,tachometer — FSC 6680
  • Calibration Voltage Output Type in Volts: 3.0 DC
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)
  • Shaft End Characteristic: UNABLE TO DECODE
  • Nominal Center to Center Distance Between Mounting Facilities Parallel to Width: 2.750 INCHES IN
  • Keyway Center to Shaft End Distance: UNABLE TO DECODE
  • Shaft Diameter: UNABLE TO DECODE
  • Thread Length: UNABLE TO DECODE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Generator,tachometer, cataloged under National Stock Number 6680-00-557-5328, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Dynalec Corporation. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-557-5328
Primary Part NumberM1200B
Item NameGenerator,tachometer
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerDynalec Corporation
StatusACTIVE
Calibration Voltage Output Type in Volts3.0 DC
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Shaft End CharacteristicUNABLE TO DECODE
Nominal Center to Center Distance Between Mounting Facilities Parallel to Width2.750 INCHES IN
Keyway Center to Shaft End DistanceUNABLE TO DECODE
Shaft DiameterUNABLE TO DECODE
Thread LengthUNABLE TO DECODE
Mounting MethodFIXED BASE
Current TypeUNABLE TO DECODE
Shaft End CharacteristicUNABLE TO DECODE
Excitor TypeSEPARATELY EXCITED
Woodruff Key Size DesignationUNABLE TO DECODE
Nominal Center to Center Distance Between Mounting Facilities Parallel to Length0.875 INCHES IN
Current Rating in AmpsUNABLE TO DECODE
Terminal Type and Quantity1 CONNECTOR, PLUG
Length of Shaft From HousingUNABLE TO DECODE
Calibration Speed in RPM1000.0
Features ProvidedHORIZONTAL MOUNTING POSITION AND VERTICAL MOUNTING POSITION
Electrical Resistance8.0 OHMS
Accuracy Range in Percent-2.0 TO 2.0
Rotor Speed Rating in RPM300.0 LOW FULL LOAD AND 2500.0 HIGH FULL LOAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6680-00-234-9245 INTERCHANGEABLE
Tachometer,mechanical,handheld
6680-00-242-43644401-H INTERCHANGEABLE
Tachometer,mechanical,handheld
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
6680-00-276-7532312 INTERCHANGEABLE
Tachometer,mechanical,handheld
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
6320-00-893-2857 INTERCHANGEABLE
Indicator,ship's Engine Order
6680-00-921-1039 INTERCHANGEABLE
Tachometer,mechanical,handheld
6680-01-069-0428 INTERCHANGEABLE
Tachometer,mechanical,handheld
6680-01-069-1825 INTERCHANGEABLE
Tachometer,mechanical,handheld
Cross-Reference Index
Part NumberManufacturer
M1200B Dynalec Corporation (USA)
MIL-T-16049TYPE1CEFB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-16049 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1200B-3 Dynalec Corporation (USA)
PL7000P07917PC2 L-3 Communications Westwood Corporation Dba Edi Division Div Tano Division (USA)
Related Parts
6680-00-234-9245INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
6680-00-242-4364INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
4401-H
6680-00-276-7532INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
312
6320-00-893-2857INTERCHANGEABLE
INDICATOR,SHIP'S ENGINE ORDER
6680-00-921-1039INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
6680-01-069-0428INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
6680-01-069-1825INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD

Frequently Asked Questions

What is NSN 6680-00-557-5328?

NSN 6680-00-557-5328 is a Generator,tachometer, manufactured by Dynalec Corporation, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-557-5328?

NSN 6680-00-557-5328 has 5 cross-referenced part numbers: M1200B (Dynalec Corporation), MIL-T-16049TYPE1CEFB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-16049 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M1200B-3 (Dynalec Corporation), PL7000P07917PC2 (L-3 Communications Westwood Corporation Dba Edi Division Div Tano Division).

What NSN replaces 6680-00-557-5328?

There are 7 known substitutes for 6680-00-557-5328: 6680-00-234-9245, 6680-00-242-4364, 6680-00-276-7532 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M1200B?

Key specifications for M1200B: Calibration Voltage Output Type in Volts: 3.0 DC; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Shaft End Characteristic: UNABLE TO DECODE; Overall Height: 4.625 INCHES IN. 24 total characteristics are documented in the Federal Logistics Information System.

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