PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILS20708-2Synchro,transmitter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5990-00-677-6457 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-677-6457 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-677-6457. Primary manufacturer part number: MILS20708-2.
Features
  • Synchro,transmitter — FSC 5990
  • Shaft Nominal Thread Size: 0.190 INCHES SINGLE SHAFT IN
  • Shaft Length: 0.4930 INCHES NOMINAL SINGLE SHAFT IN
  • Rotor Input Voltage Rating in Volts: 115.0 NOMINAL
  • Spline Tooth Diametral Pitch: 120 SINGLE SHAFT
  • Body Size: 11
  • Shaft Thread Direction: RIGHT-HAND SINGLE SHAFT
  • Frequency in Hertz: 400.0 NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-00-677-6457, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-677-6457
Primary Part NumberMILS20708-2
Item NameSynchro,transmitter
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Shaft Nominal Thread Size0.190 INCHES SINGLE SHAFT IN
Shaft Length0.4930 INCHES NOMINAL SINGLE SHAFT IN
Rotor Input Voltage Rating in Volts115.0 NOMINAL
Spline Tooth Diametral Pitch120 SINGLE SHAFT
Body Size11
Shaft Thread DirectionRIGHT-HAND SINGLE SHAFT
Frequency in Hertz400.0 NOMINAL
Shaft Thread Length0.2000 INCHES NOMINAL SINGLE SHAFT IN
Nondefinitive Spec/std Data1 TYPE
Transformation Ratio0.783 ROTOR TO STATOR NOMINAL
Shaft Thread Class2A SINGLE SHAFT A
Shaft Thread Series DesignatorUNF SINGLE SHAFT
Rotor Input Electrical Power Rating610.0 MILLIWATTS NOMINAL
Rotor Input Current Rating35.0 MILLIAMPERES NOMINAL
Terminal Type and Quantity5 SCREW
Shaft Diameter0.1872 INCHES NOMINAL SINGLE SHAFT IN
Shaft TypeSPLINE W/THREADS SINGLE SHAFT
Spline Tooth Quantity21 SINGLE SHAFT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5990-00-206-3753M20708/2-05E INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
5990-00-477-1362M20708/2-04E INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
5990-00-677-6474 INTERCHANGEABLE
Synchro,control Transformer
5990-00-819-9949 INTERCHANGEABLE
Synchro,transmitter
5990-00-924-4165M20708/2-01E INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MILS20708-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5990-00-206-3753INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-05E
5990-00-477-1362INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-04E
5990-00-677-6474INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
5990-00-819-9949INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-00-924-4165INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-01E

Frequently Asked Questions

What is NSN 5990-00-677-6457?

NSN 5990-00-677-6457 is a Synchro,transmitter, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-677-6457?

NSN 5990-00-677-6457 has 1 cross-referenced part number: MILS20708-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5990-00-677-6457?

There are 5 known substitutes for 5990-00-677-6457: 5990-00-206-3753, 5990-00-477-1362, 5990-00-677-6474 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILS20708-2?

Key specifications for MILS20708-2: Overall Length: 1.8630 INCHES NOMINAL IN; Shaft Nominal Thread Size: 0.190 INCHES SINGLE SHAFT IN; Shaft Length: 0.4930 INCHES NOMINAL SINGLE SHAFT IN; Rotor Input Voltage Rating in Volts: 115.0 NOMINAL. 19 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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