PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400491Synchro,transmitter

Aimtron Systems, Llc · NSN 5990-00-912-9166 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-912-9166 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-912-9166. Primary manufacturer part number: 400491.
Features
  • Synchro,transmitter — FSC 5990
  • Plus J Zss Reactance in Ohms: 500.00 NOMINAL
  • Terminal Location: REAR
  • Frequency in Hertz: 400.0 NOMINAL
  • Rotor Input Voltage Rating in Volts: 115.0 NOMINAL
  • Shaft Thread Direction: RIGHT-HAND SINGLE SHAFT
  • Terminal Type and Quantity: 5 WIRE LEAD
  • Body Style: STANDARD ROUND B
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-00-912-9166, 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 Aimtron Systems, Llc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 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
NSN5990-00-912-9166
Primary Part Number400491
Item NameSynchro,transmitter
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerAimtron Systems, Llc
StatusACTIVE
Plus J Zss Reactance in Ohms500.00 NOMINAL
Terminal LocationREAR
Frequency in Hertz400.0 NOMINAL
Rotor Input Voltage Rating in Volts115.0 NOMINAL
Shaft Thread DirectionRIGHT-HAND SINGLE SHAFT
Terminal Type and Quantity5 WIRE LEAD
Body StyleSTANDARD ROUND B
Shoulder Diameter1.0000 INCHES NOMINAL IN
Flange Thickness0.0620 INCHES NOMINAL IN
Maximum Fundamental Null Voltage in Millivolts Per Volt45.00 INPUT
Rotor Input Current Rating30.0 MILLIAMPERES NOMINAL
Pilot Diameter0.6250 INCHES NOMINAL IN
Maximum Total Null Voltage Output in Millivolts Per Volt75.00
Flange Diameter1.0620 INCHES NOMINAL IN
Undercut Width0.0620 INCHES NOMINAL IN
Length0.0930 INCHES NOMINAL SHOULDER IN
Rotor Input Electrical Power Rating510.0 MILLIWATTS NOMINAL
Shaft Diameter0.1872 INCHES NOMINAL SINGLE SHAFT IN
Shaft Thread Length0.2950 INCHES NOMINAL SINGLE SHAFT IN
Mounting Surface to Terminal End Distance1.7320 INCHES MAXIMUM IN
Zss Resistance in Ohms410.00 NOMINAL
Phase Shift Angle in Deg4.500 INPUT TO OUTPUT NOMINAL
Pilot Length0.0620 INCHES NOMINAL IN
Body Size11
Shaft Thread Class2A SINGLE SHAFT A
Zro Resistance in Ohms3720.00 NOMINAL
Shaft Nominal Thread Size0.1850 INCHES SINGLE SHAFT IN
Shaft TypeSPLINE W/THREADS SINGLE SHAFT
Shaft Length0.5000 INCHES NOMINAL SINGLE SHAFT IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
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
5905-00-593-82531472219 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5990-00-683-084411CX4B INTERCHANGEABLE
Synchro,transmitter
Kearfott Corporation Div Guidance and Navigation Division
5990-00-924-4165M20708/2-01E INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
5990-01-032-0710M20708/6-02C INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
6130-01-196-8527400491 INTERCHANGEABLE
Power Supply
Dictaphone Corporation
4820-01-394-759240049-1 INTERCHANGEABLE
Valve Adapter Plate
Morpac Industries, Inc Div Actuator
5310-01-703-3304400491 INTERCHANGEABLE
Washer,lock
Miller Industries Towing Equipment Inc
Cross-Reference Index
Part NumberManufacturer
CR90913013 Kearfott Corporation Div Guidance and Navigation Division (USA)
CR90913013-0 Kearfott Corporation Div Guidance and Navigation Division (USA)
11CX4E Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
400491 Cardion Inc (USA)
11CX200B1-3 American Precision Industries, Inc Div Portescap Us (USA)
400491 PRIMARY Aimtron Systems, Llc (USA)
Related Parts
5990-00-206-3753INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-05E
5990-00-477-1362INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-04E
5905-00-593-8253INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
1472219
5990-00-683-0844INTERCHANGEABLE
SYNCHRO,TRANSMITTER
11CX4B
5990-00-924-4165INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/2-01E
5990-01-032-0710INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/6-02C
6130-01-196-8527INTERCHANGEABLE
POWER SUPPLY
400491
4820-01-394-7592INTERCHANGEABLE
VALVE ADAPTER PLATE
40049-1
5310-01-703-3304INTERCHANGEABLE
WASHER,LOCK
400491

Frequently Asked Questions

What is NSN 5990-00-912-9166?

NSN 5990-00-912-9166 is a Synchro,transmitter, manufactured by Aimtron Systems, Llc, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-912-9166?

NSN 5990-00-912-9166 has 6 cross-referenced part numbers: CR90913013 (Kearfott Corporation Div Guidance and Navigation Division), CR90913013-0 (Kearfott Corporation Div Guidance and Navigation Division), 11CX4E (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 400491 (Cardion Inc), 11CX200B1-3 (American Precision Industries, Inc Div Portescap Us) and 1 more.

What NSN replaces 5990-00-912-9166?

There are 9 known substitutes for 5990-00-912-9166: 5990-00-206-3753, 5990-00-477-1362, 5905-00-593-8253 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400491?

Key specifications for 400491: Plus J Zss Reactance in Ohms: 500.00 NOMINAL; Terminal Location: REAR; Frequency in Hertz: 400.0 NOMINAL; Rotor Input Voltage Rating in Volts: 115.0 NOMINAL. 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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