PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILS20708-2Synchro,control Transformer

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5990-00-677-6474 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-677-6474 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-677-6474. Primary manufacturer part number: MILS20708-2.
Features
  • Synchro,control Transformer — FSC 5990
  • Body Size: 15
  • Terminal Type and Quantity: 5 SCREW
  • Spline Tooth Quantity: 21 SINGLE SHAFT
  • Stator Input Current Rating: 40.0 MILLIAMPERES NOMINAL
  • Shaft Thread Direction: RIGHT-HAND SINGLE SHAFT
  • Stator Input Electrical Power Rating: 1.2 WATTS NOMINAL
  • Transformation Ratio: 0.735 ROTOR TO STATOR NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,control Transformer, cataloged under National Stock Number 5990-00-677-6474, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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: Cancelled.

Technical Specifications
ParameterValue
NSN5990-00-677-6474
Primary Part NumberMILS20708-2
Item NameSynchro,control Transformer
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Body Size15
Terminal Type and Quantity5 SCREW
Spline Tooth Quantity21 SINGLE SHAFT
Stator Input Current Rating40.0 MILLIAMPERES NOMINAL
Shaft Thread DirectionRIGHT-HAND SINGLE SHAFT
Stator Input Electrical Power Rating1.2 WATTS NOMINAL
Transformation Ratio0.735 ROTOR TO STATOR NOMINAL
Spline Tooth Diametral Pitch120 SINGLE SHAFT
Stator Input Voltage Rating in Volts115.0 NOMINAL
Shaft Diameter0.1872 INCHES NOMINAL SINGLE SHAFT IN
Shaft Length0.5000 INCHES NOMINAL SINGLE SHAFT IN
Shaft TypeSPLINE W/THREADS SINGLE SHAFT
Shaft Thread Series DesignatorUNF SINGLE SHAFT
Shaft Nominal Thread Size0.190 INCHES SINGLE SHAFT IN
Frequency in Hertz60.0 NOMINAL
Shaft Thread Class2A SINGLE SHAFT A
Shaft Thread Length0.2430 INCHES NOMINAL SINGLE SHAFT IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
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
5990-00-677-6457 INTERCHANGEABLE
Synchro,transmitter
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
15CT6B 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
5990-00-677-6457INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-00-819-9949INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-00-924-4165INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-01E

Frequently Asked Questions

What is NSN 5990-00-677-6474?

NSN 5990-00-677-6474 is a Synchro,control Transformer, 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: cancelled.

What are the part numbers for NSN 5990-00-677-6474?

NSN 5990-00-677-6474 has 2 cross-referenced part numbers: MILS20708-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 15CT6B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5990-00-677-6474?

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

What are the specifications of MILS20708-2?

Key specifications for MILS20708-2: Body Size: 15; Terminal Type and Quantity: 5 SCREW; Spline Tooth Quantity: 21 SINGLE SHAFT; Stator Input Current Rating: 40.0 MILLIAMPERES NOMINAL. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5990-00-677-6474 still in active supply?

NSN 5990-00-677-6474 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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