PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILS20708Synchro,control Transformer

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5990-00-899-0517 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-899-0517 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-899-0517. Primary manufacturer part number: MILS20708.
Features
  • Synchro,control Transformer — FSC 5990
  • Frequency in Hertz: 400.0 NOMINAL
  • Stator Input Current Rating: 165.0 MILLIAMPERES NOMINAL
  • Shaft Diameter: 0.1200 INCHES NOMINAL SINGLE SHAFT IN
  • Shaft Length: 0.5000 INCHES NOMINAL SINGLE SHAFT IN
  • Stator Input Voltage Rating in Volts: 26.0 NOMINAL
  • Stator Input Electrical Power Rating: 250.0 MILLIWATTS NOMINAL
  • Terminal Type and Quantity: 5 SCREW
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,control Transformer, cataloged under National Stock Number 5990-00-899-0517, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-899-0517
Primary Part NumberMILS20708
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
StatusACTIVE
Frequency in Hertz400.0 NOMINAL
Stator Input Current Rating165.0 MILLIAMPERES NOMINAL
Shaft Diameter0.1200 INCHES NOMINAL SINGLE SHAFT IN
Shaft Length0.5000 INCHES NOMINAL SINGLE SHAFT IN
Stator Input Voltage Rating in Volts26.0 NOMINAL
Stator Input Electrical Power Rating250.0 MILLIWATTS NOMINAL
Terminal Type and Quantity5 SCREW
Body Diameter1.0620 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5990-00-018-9723M20708/20-01C INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
5990-00-503-4126 INTERCHANGEABLE
Synchro,transmitter
5990-00-552-9365 INTERCHANGEABLE
Synchro,receiver
5990-00-644-0101 INTERCHANGEABLE
Synchro,differential Transmitter
5990-00-677-6476M20708/25-01B INTERCHANGEABLE
Synchro,control Transformer
Sae International Dba Sae International
5990-00-851-2793 INTERCHANGEABLE
Synchro,differential Transmitter
5990-00-866-3692 INTERCHANGEABLE
Synchro,differential Transmitter
5990-00-912-8849 INTERCHANGEABLE
Synchro,transmitter
5990-01-121-1175M20708/67-01B INTERCHANGEABLE
Synchro,differential Receiver
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MILS20708 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
11CT4A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILS20708TYPE11CT4A Alenia Difesa Spa Divisione Sistemi Avionici Ed Equipaggiamenti Unita' Officine Galileo (ITA)
MILS20708TYPE11CT4A Leonardo S.p.a. Div Electronics (ITA)
Related Parts
5990-00-018-9723INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/20-01C
5990-00-503-4126INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-00-552-9365INTERCHANGEABLE
SYNCHRO,RECEIVER
5990-00-644-0101INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
5990-00-677-6476INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
M20708/25-01B
5990-00-851-2793INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
5990-00-866-3692INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
5990-00-912-8849INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-01-121-1175INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL RECEIVER
M20708/67-01B

Frequently Asked Questions

What is NSN 5990-00-899-0517?

NSN 5990-00-899-0517 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: active.

What are the part numbers for NSN 5990-00-899-0517?

NSN 5990-00-899-0517 has 4 cross-referenced part numbers: MILS20708 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 11CT4A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILS20708TYPE11CT4A (Alenia Difesa Spa Divisione Sistemi Avionici Ed Equipaggiamenti Unita' Officine Galileo), MILS20708TYPE11CT4A (Leonardo S.p.a. Div Electronics).

What NSN replaces 5990-00-899-0517?

There are 9 known substitutes for 5990-00-899-0517: 5990-00-018-9723, 5990-00-503-4126, 5990-00-552-9365 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILS20708?

Key specifications for MILS20708: Overall Length: 2.3380 INCHES NOMINAL IN; Frequency in Hertz: 400.0 NOMINAL; Stator Input Current Rating: 165.0 MILLIAMPERES NOMINAL; Shaft Diameter: 0.1200 INCHES NOMINAL SINGLE SHAFT IN. 9 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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