AS20708/99

View detailed technical data, stock status, and sourcing information for: AS20708/99
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-110-1153

Item Name Code

27218

Assigment Date

08/09/1968 (57 years ago)

A synchro having a dual purpose. It may be used in applications requiring either a receiver or transmitter. For synchros having a single purpose, see synchro, receiver and synchro, transmitter.

unable to decode body material, 2.6950 inches minimum and 2.7000 inches maximum shoulder diameter, 2.7500 inches minimum and 2.7510 inches maximum second shoulder diameter, standard round d body style, 0.3750 inches nominal second shoulder length

Product Characteristics

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

Body Material: unable to decode
Body Style: standard round d
Shoulder Diameter: 2.6950 inches minimum and 2.7000 inches maximum
Second Shoulder Diameter: 2.7500 inches minimum and 2.7510 inches maximum
Second Shoulder Length: 0.3750 inches nominal
Overall Length: 5.1000 inches nominal
Flange Diameter: 2.0990 inches minimum and 3.1000 inches maximum
Flange Thickness: 0.2500 inches nominal
Body Diameter: 2.7000 inches maximum
Shaft Diameter: 0.2403 inches minimum and 0.2405 inches maximum single shaft
Shaft Length: 0.7300 inches nominal single shaft
Fragility Factor: moderately rugged
Maximum Temp Rise: 35.0 celsius
Body Size: 31
Rotor Input Voltage Rating In Volts: 115.0 nominal
Frequency In Hertz: 60.0 nominal
Rotor Input Current Rating: 440.0 milliamperes maximum
Rotor Input Electrical Power Rating: 6.6 watts maximum
Zss Impedance Magnitude In Ohms: 24.00 minimum and 33.00 maximum
Zss Impedance Angle In Deg: 16.00 minimum and 24.00 maximum
Phase Shift Angle In Deg: 6.500 input to output maximum
Maximum Fundamental Null Voltage In Millivolts Per Volt: 35.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt: 170.00
Electrical Error Angular Range In Minutes: -10.0 to 10.0
Spline Tooth Quantity: 22 single shaft
Receiver Error Angular Range In Minutes: -36.0 to 36.0
Torque Gradient Per Angular Deg: 0.400 inch-ounces maximum
Pilot Length: 0.0300 inches nominal
Shoulder Length: unable to decode
Aft Of First Flange Diameter: 2.7490 inches minimum and 2.7500 inches maximum
Mounting Surface To Terminal End Distance: 4.1200 inches nominal
Spline Tooth Diametral Pitch: 96 single shaft
Shaft Thread Series Designator: unf single shaft
Shaft Thread Direction: right-hand single shaft
Shaft Thread Class: 2a single shaft
Terminal Location: rear
Shaft Thread Length: 0.3100 inches nominal single shaft
Shaft Type: spline w/threads single shaft
Transformation Ratio: 0.783 rotor to stator nominal
Shaft Nominal Thread Size: 0.250 inches single shaft
Test Data Document: "81349-mil-s-20708 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.)."
Terminal Type And Quantity: 5 screw
Specification/Standard Data: 81349-mil-s-20708/66 government specification

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5990-00-556-0962	No Name Available	04/03/1969
5990-00-578-3216	No Name Available	08/01/1976
5990-01-233-4201	No Name Available	05/01/1995
5990-01-249-8211	No Name Available	03/01/1988

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
10-1732 PIECE 56	Receiver-Transmitter Synchro
15A491-1	Receiver-Transmitter Synchro
31TRX6A	Receiver-Transmitter Synchro
685021C30004-3	Receiver-Transmitter Synchro
AS20708/66	Receiver-Transmitter Synchro
AS20708/99	Receiver-Transmitter Synchro
M20708-66C-001	Receiver-Transmitter Synchro
M20708/66-001	Receiver-Transmitter Synchro
M20708/66-01A	Receiver-Transmitter Synchro
MIL-S-20708/66	Receiver-Transmitter Synchro
SAE-AS20708/66	Receiver-Transmitter Synchro

FAQs

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

What is the FSCG of the NSN 5990-00-110-1153?

The FSCG of the NSN 5990-00-110-1153 is 5990

Does the NSN 5990-00-110-1153 have a Schedule B code assigned?

Yes, the Schedule B code is 9014900000

Does NSN 5990-00-110-1153 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 5990-00-110-1153 contain precious materials?

Item does not contain precious metal.

Does NSN 5990-00-110-1153 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 5990-00-110-1153 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Aug 9, 1968