AS20708/78

View detailed technical data, stock status, and sourcing information for: AS20708/78
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-465-4829

Item Name Code

02073

Assigment Date

01/19/1970 (56 years ago)

0.4995 inches minimum and 0.5000 inches maximum pilot diameter, 0.0620 inches nominal flange thickness, 0.7470 inches minimum and 0.7500 inches maximum flange diameter, standard round a body style, 1.6050 inches nominal overall length

Product Characteristics

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

Body Style: standard round a
Pilot Diameter: 0.4995 inches minimum and 0.5000 inches maximum
Overall Length: 1.6050 inches nominal
Flange Diameter: 0.7470 inches minimum and 0.7500 inches maximum
Flange Thickness: 0.0620 inches nominal
Undercut Diameter: 0.6920 inches nominal
Undercut Width: 0.0620 inches nominal
Shaft Diameter: 0.0895 inches minimum and 0.0900 inches maximum single shaft
Shaft Length: 0.3650 inches nominal single shaft
Fragility Factor: moderately rugged
End Item Identification: t-37 support equipment; t-38 support eequipment; aircraft, viking s-3b; prowler ea-6b aircraft; p-3 orion; avionics shop test system; customer focus pool; air traffic control
Maximum Temp Rise: 20.0 celsius
Body Size: 8
Rotor Input Voltage Rating In Volts: 26.0 nominal
Frequency In Hertz: 400.0 nominal
Rotor Input Current Rating: 153.0 milliamperes maximum
Rotor Input Electrical Power Rating: 700.0 milliwatts nominal
Zro Impedance Magnitude In Ohms: 170.00 minimum and 215.00 maximum
Zro Impedance Angle In Deg: 77.50 minimum and 80.50 maximum
Zss Impedance Magnitude In Ohms: 11.00 minimum and 15.00 maximum
Zss Impedance Angle In Deg: 9.00 minimum and 15.00 maximum
Phase Shift Angle In Deg: 8.500 input to output nominal
Maximum Fundamental Null Voltage In Millivolts Per Volt: 20.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt: 30.00
Electrical Error Angular Range In Minutes: -7.0 to 7.0
Actuator Friction Torque At Plus 25 Deg Celsius: 0.04 inch-ounces maximum
Pilot Length: 0.0400 inches nominal
Mounting Surface To Terminal End Distance: 1.2400 inches maximum
Body Material: steel corrosion resisting
Terminal Location: rear
Shaft Slot Depth: 0.0250 inches nominal single shaft
Shaft Slot Width: 0.0200 inches nominal single shaft
Shaft Type: round, slotted single shaft
Criticality Code Justification: feat
Transformation Ratio: 0.454 rotor to stator nominal
Special Features: weapon system essential
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 wire lead
Specification/Standard Data: 81349-mil-s-20708/78 government specification

Replaces National Stock Numbers

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

NSN	Name	Date
5990-00-677-6510	No Name Available	05/01/1988
5990-01-275-0691	No Name Available	03/01/1990

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
26V-08CX4C	Transmitter Synchro
26V-08CX4C/78-01C	Transmitter Synchro
7101901	Transmitter Synchro
AS20708/78	Transmitter Synchro
M20708-78D001	Transmitter Synchro
M20708/78-001	Transmitter Synchro
M20708/78-01C	Transmitter Synchro
MIL-S-20708/78	Transmitter Synchro
SAE-AS20708/78	Transmitter Synchro

FAQs

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

What is the FSCG of the NSN 5990-00-465-4829?

The FSCG of the NSN 5990-00-465-4829 is 5990

Does the NSN 5990-00-465-4829 have a Schedule B code assigned?

Yes, the Schedule B code is 9014900000

Does NSN 5990-00-465-4829 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5990-00-465-4829 contain precious materials?

Item does not contain precious metal.

Does NSN 5990-00-465-4829 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 5990-00-465-4829 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Jan 19, 1970