PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

VTX23/36-4ASynchro,transmitter

General Dynamics Motion Control Llc · NSN 5990-00-503-4126 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-503-4126 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-503-4126. Primary manufacturer part number: VTX23/36-4A.
Features
  • Synchro,transmitter — FSC 5990
  • Aft of First Flange Diameter: 1.9950 INCHES NOMINAL IN
  • Frequency in Hertz: 400.0 NOMINAL
  • Fragility Factor: MODERATELY RUGGED
  • Flange Diameter: 2.2500 INCHES NOMINAL IN
  • Pilot Diameter: 0.6000 INCHES NOMINAL IN
  • Second Shoulder Length: 0.1540 INCHES NOMINAL IN
  • Body Diameter: 1.9840 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-00-503-4126, 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 General Dynamics Motion Control Llc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5990-00-503-4126
Primary Part NumberVTX23/36-4A
Item NameSynchro,transmitter
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerGeneral Dynamics Motion Control Llc
StatusCANCELLED
Aft of First Flange Diameter1.9950 INCHES NOMINAL IN
Frequency in Hertz400.0 NOMINAL
Fragility FactorMODERATELY RUGGED
Flange Diameter2.2500 INCHES NOMINAL IN
Pilot Diameter0.6000 INCHES NOMINAL IN
Second Shoulder Length0.1540 INCHES NOMINAL IN
Body Diameter1.9840 INCHES NOMINAL IN
Second Shoulder Diameter1.9995 INCHES NOMINAL IN
Body StyleSTANDARD ROUND D
Shoulder Diameter1.9950 INCHES NOMINAL IN
Flange Thickness0.2500 INCHES NOMINAL IN
Length0.2660 INCHES NOMINAL SHOULDER IN
Body Size23
Shaft Diameter0.2405 INCHES NOMINAL SINGLE SHAFT IN
Pilot Length0.0430 INCHES NOMINAL IN
Torque Gradient Per Angular Deg0.130 INCH-OUNCES NOMINAL IN
Rotor Input Electrical Power Rating0.36 WATTS NOMINAL
Test Data Document81349-MIL-S-16892 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Shaft Slot Width0.0250 INCHES NOMINAL SINGLE SHAFT IN
Shaft Slot Depth0.0310 INCHES NOMINAL SINGLE SHAFT IN
Shaft Thread DirectionRIGHT-HAND SINGLE SHAFT
Mounting Surface to Terminal End Distance3.5800 INCHES NOMINAL IN
Transformation Ratio0.783 ROTOR TO STATOR NOMINAL
Zro Impedance Magnitude in Ohms105.00 NOMINAL
Terminal Type and Quantity5 SCREW
Shaft Thread Length0.2670 INCHES NOMINAL SINGLE SHAFT IN
Electrical Error Angular Range in Minutes-8.0 TO 8.0
Body MaterialSTEEL CORROSION RESISTING
Rotor Input Voltage Rating in Volts115.0 NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5990-00-018-9723M20708/20-01C INTERCHANGEABLE
Synchro,transmitter
Sae International Dba Sae International
5990-00-503-0386 INTERCHANGEABLE
Synchro,transmitter
5990-00-538-1237 INTERCHANGEABLE
Synchro,differential Transmitter
5990-00-552-9365 INTERCHANGEABLE
Synchro,receiver
5990-00-557-8387 INTERCHANGEABLE
Synchro,receiver
5990-00-636-41117674819 INTERCHANGEABLE
Synchro,receiver
Sae International Dba Sae International
5990-00-644-0101 INTERCHANGEABLE
Synchro,differential Transmitter
5990-00-677-6476M20708/25-01B INTERCHANGEABLE
Synchro,control Transformer
Sae International Dba Sae International
5990-00-822-54518212766 INTERCHANGEABLE
Synchro,receiver
Sae International Dba Sae International
5990-00-843-3615 INTERCHANGEABLE
Synchro,control Transformer
Cross-Reference Index
Part NumberManufacturer
VTX23/36-4A General Dynamics Motion Control Llc (USA)
23TX4 Sae International Dba Sae International (USA)
113F2A Kontron Europe Gmbh (DEU)
23TX4 Society of Automotive Engineers Inc (USA)
AS20708/94 Society of Automotive Engineers Inc (USA)
MILS16892 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILS20708 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7674818 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
23TX4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AY240AA 4 A1 Honeywell Intl Inc Defense Avionics Systems (USA)
591C27-3 Cardwell Condenser Corp Lapointe-Admiral Div (USA)
C737834-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
113F2A Northrop Grumman Systems Corporation (USA)
AY240AA 4 A1 Honeywell International Inc. Dba Honeywell International (USA)
AS20708/94 Sae International Dba Sae International (USA)
3563240-0503 Honeywell International Inc. Dba Honeywell International (USA)
Related Parts
5990-00-018-9723INTERCHANGEABLE
SYNCHRO,TRANSMITTER
M20708/20-01C
5990-00-503-0386INTERCHANGEABLE
SYNCHRO,TRANSMITTER
5990-00-538-1237INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
5990-00-552-9365INTERCHANGEABLE
SYNCHRO,RECEIVER
5990-00-557-8387INTERCHANGEABLE
SYNCHRO,RECEIVER
5990-00-636-4111INTERCHANGEABLE
SYNCHRO,RECEIVER
7674819
5990-00-644-0101INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
5990-00-677-6476INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
M20708/25-01B
5990-00-822-5451INTERCHANGEABLE
SYNCHRO,RECEIVER
8212766
5990-00-843-3615INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
5990-00-847-3806INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
7676357
5990-00-850-0609INTERCHANGEABLE
SYNCHRO,RECEIVER
7676355

Frequently Asked Questions

What is NSN 5990-00-503-4126?

NSN 5990-00-503-4126 is a Synchro,transmitter, manufactured by General Dynamics Motion Control Llc, classified under FSC 5990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5990-00-503-4126?

NSN 5990-00-503-4126 has 16 cross-referenced part numbers: VTX23/36-4A (General Dynamics Motion Control Llc), 23TX4 (Sae International Dba Sae International), 113F2A (Kontron Europe Gmbh), 23TX4 (Society of Automotive Engineers Inc), AS20708/94 (Society of Automotive Engineers Inc) and 11 more.

What NSN replaces 5990-00-503-4126?

There are 12 known substitutes for 5990-00-503-4126: 5990-00-018-9723, 5990-00-503-0386, 5990-00-538-1237 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of VTX23/36-4A?

Key specifications for VTX23/36-4A: Aft of First Flange Diameter: 1.9950 INCHES NOMINAL IN; Frequency in Hertz: 400.0 NOMINAL; Fragility Factor: MODERATELY RUGGED; Flange Diameter: 2.2500 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5990-00-503-4126 still in active supply?

NSN 5990-00-503-4126 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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