PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M20708/8-06CSynchro,transmitter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5990-01-189-3201 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-01-189-3201 — this item is cataloged by the U.S. Government under National Stock Number 5990-01-189-3201. Primary manufacturer part number: M20708/8-06C.
Features
  • Synchro,transmitter — FSC 5990
  • Flange Diameter: 1.0620 INCHES NOMINAL IN
  • Undercut Width: 0.0620 INCHES NOMINAL IN
  • Body Style: STANDARD ROUND B
  • Shoulder Diameter: 1.0000 INCHES NOMINAL IN
  • Flange Thickness: 0.0930 INCHES NOMINAL IN
  • Pilot Diameter: 0.6250 INCHES NOMINAL IN
  • Length: 0.0620 INCHES NOMINAL SHOULDER IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-01-189-3201, 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 29 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-01-189-3201
Primary Part NumberM20708/8-06C
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
Flange Diameter1.0620 INCHES NOMINAL IN
Undercut Width0.0620 INCHES NOMINAL IN
Body StyleSTANDARD ROUND B
Shoulder Diameter1.0000 INCHES NOMINAL IN
Flange Thickness0.0930 INCHES NOMINAL IN
Pilot Diameter0.6250 INCHES NOMINAL IN
Length0.0620 INCHES NOMINAL SHOULDER IN
Electrical Error Angular Range in Minutes-7.0 TO 7.0
Zss Impedance Magnitude in Ohms6.00 MINIMUM AND 12.00 MAXIMUM
Mounting Surface to Terminal End Distance1.7940 INCHES NOMINAL IN
Body Size11
Shaft Thread DirectionRIGHT-HAND SINGLE SHAFT
Shaft Radial Play Determining Weight8.0 OUNCES OZ
Shaft End Play Determining Weight1.0 OUNCES OZ
Spline Tooth Diametral Pitch120 SINGLE SHAFT
Shaft End Play0.0100 INCHES NOMINAL IN
Specification/standard Data81349-MIL-S-20708/8 GOVERNMENT SPECIFICATION
Body MaterialSTEEL CORROSION RESISTING
Zro Impedance Angle in Deg80.50 MINIMUM AND 84.00 MAXIMUM
Pilot Length0.0620 INCHES NOMINAL IN
Zro Impedance Magnitude in Ohms200.00 MINIMUM AND 300.00 MAXIMUM
Shaft Maximum Radial Play0.0006 INCHES IN
Maximum Fundamental Null Voltage in Millivolts Per Volt12.00 OUTPUT
Shaft Nominal Thread Size0.190 INCHES SINGLE SHAFT IN
Maximum Temp Rise20.0 CELSIUS DEGC
Rotor Input Voltage Rating in Volts26.0 NOMINAL
Spline Tooth Quantity21 SINGLE SHAFT
Rotor Input Current Rating130.0 MILLIAMPERES MAXIMUM
Rotor Input Electrical Power Rating340.0 MILLIWATTS NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5990-00-924-4164M20708/8-01C INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
M20708/8-06C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-20708/8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5990-00-924-4164INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/8-01C

Frequently Asked Questions

What is NSN 5990-01-189-3201?

NSN 5990-01-189-3201 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 5990-01-189-3201?

NSN 5990-01-189-3201 has 2 cross-referenced part numbers: M20708/8-06C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-20708/8 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5990-01-189-3201?

There is 1 known substitute for 5990-01-189-3201: 5990-00-924-4164. Verify interchangeability with system specifications before substitution.

What are the specifications of M20708/8-06C?

Key specifications for M20708/8-06C: Flange Diameter: 1.0620 INCHES NOMINAL IN; Undercut Width: 0.0620 INCHES NOMINAL IN; Body Style: STANDARD ROUND B; Overall Length: 2.4180 INCHES NOMINAL IN. 30 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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