18CDX4B

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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-677-6479

Item Name Code

02071

Assigment Date

01/01/1963 (63 years ago)

A synchro, the rotor of which is mechanically positioned for modifying electrical angular information, received from a transmitter synchro and transmitting to receiver synchro or control transformer synchro electrical information corresponding to the sum or difference of the electrical input angle and its rotor position angle. Does not include variable resistors, goniometers, variable transformers, or items with dials.

0.1872 inches nominal single shaft shaft diameter, 2.7100 inches nominal overall length, 115.0 nominal stator input voltage rating in volts, 0.5000 inches nominal single shaft shaft length, 18 body size

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Length: 2.7100 inches nominal
Shaft Diameter: 0.1872 inches nominal single shaft
Shaft Length: 0.5000 inches nominal single shaft
Body Size: 18
Stator Input Voltage Rating In Volts: 115.0 nominal
Stator Input Current Rating: 143.0 milliamperes nominal
Stator Input Electrical Power Rating: 1.7 watts nominal
Frequency In Hertz: 400.0 nominal
Spline Tooth Quantity: 21 single shaft
Spline Tooth Diametral Pitch: 120 single shaft
Shaft Thread Series Designator: unf single shaft
Shaft Thread Direction: right-hand single shaft
Shaft Thread Class: 2a single shaft
Shaft Thread Length: 0.2000 inches nominal single shaft
Shaft Type: spline w/threads single shaft
Transformation Ratio: 1.154 rotor to stator nominal
Shaft Nominal Thread Size: 0.1900 inches single shaft
Terminal Type And Quantity: 6 screw

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
18CDX4B	Differential Transmitter Synchro
MILS20708-30	Differential Transmitter Synchro

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5990-00-677-6479?

The FSCG of the NSN 5990-00-677-6479 is 5990

Does the NSN 5990-00-677-6479 have a Schedule B code assigned?

Yes, the Schedule B code is 9014900000

Does NSN 5990-00-677-6479 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 5990-00-677-6479 contain precious materials?

Precious metal content is unknown

Does NSN 5990-00-677-6479 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5990-00-677-6479 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963