397-001-024

View detailed technical data, stock status, and sourcing information for: 397-001-024
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-852-2363

Item Name Code

02073

Assigment Date

11/25/1966 (59 years ago)

An item consisting of a partial turn as one or more turns of wire or other conductive material which constitutes one continuous untapped winding. It may be wound or formed in other than a circular manner and may be self-supporting, requiring no coil form. It is specifically designed to furnish inductive reactance in a circuit carrying radio frequency current ranging from 20 kilohertz (kilocycles) and above. It may include tuning devices, integral resistors and capacitors; however, excludes:filter (as modified). The coil has only two electrical terminals. For items having tapped winding or more than one winding - see transformer, radio frequency. For coils wound on resistors, which are designed to be inserted in the circuit of a radio frequency stage to suppress high frequency parasitic oscillations, see suppressor, parasitic.

0.1700 inches nominal second shoulder length, standard round d body style, 1.9850 inches minimum and 1.9900 inches maximum shoulder diameter, 1.9985 inches minimum and 1.9995 inches maximum second shoulder diameter, 0.5950 inches nominal pilot diameter

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 d
Shoulder Diameter: 1.9850 inches minimum and 1.9900 inches maximum
Pilot Diameter: 0.5950 inches nominal
Second Shoulder Diameter: 1.9985 inches minimum and 1.9995 inches maximum
Second Shoulder Length: 0.1700 inches nominal
Overall Length: 4.2990 inches nominal
Flange Diameter: 2.2490 inches minimum and 2.2500 inches maximum
Flange Thickness: 0.2500 inches nominal
Body Diameter: 1.9900 inches maximum
Shaft Diameter: 0.2403 inches minimum and 0.2405 inches maximum single shaft
Shaft Length: 0.7190 inches nominal single shaft
Fragility Factor: moderately rugged
End Item Identification: gun fire control system, mk 68; strategic weapon systems (poseidon and trident); weather radar set an/fps-77; 485l tacs; spruance class dd (963); def comm meteorl (an/tmq-028 an/tcc-76, an/tps-068, an-tcc-77); communications terminal satellite an/gsc-39(v)1; kidd class ddg; defense metereological satellite program (dmsp)
Maximum Temp Rise: 20.0 celsius
Body Size: 23
Rotor Input Voltage Rating In Volts: 115.0 nominal
Frequency In Hertz: 60.0 nominal
Rotor Input Current Rating: 80.0 milliamperes maximum
Rotor Input Electrical Power Rating: 1.4 watts nominal
Zro Impedance Magnitude In Ohms: 1450.00 minimum and 1700.00 maximum
Zro Impedance Angle In Deg: 79.00 minimum and 83.00 maximum
Zss Impedance Magnitude In Ohms: 155.00 minimum and 310.00 maximum
Zss Impedance Angle In Deg: 10.00 minimum and 15.00 maximum
Phase Shift Angle In Deg: 6.500 input to output nominal
Maximum Fundamental Null Voltage In Millivolts Per Volt: 30.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt: 60.00
Electrical Error Angular Range In Minutes: -6.0 to 6.0
Spline Tooth Quantity: 22 single shaft
Torque Gradient Per Angular Deg: 0.200 inch-ounces maximum
Pilot Length: 0.0430 inches nominal
Shoulder Length: unable to decode
Aft Of First Flange Diameter: 1.9985 inches minimum and 1.9995 inches maximum
Mounting Surface To Terminal End Distance: 3.5800 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
Body Material: steel corrosion resisting
Terminal Location: rear
Shaft Thread Length: 0.2900 inches nominal single shaft
Shaft Type: spline w/threads single shaft
Criticality Code Justification: feat
Transformation Ratio: 0.783 rotor to stator nominal
Shaft Nominal Thread Size: 0.250 inches single shaft
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 screw
Specification/Standard Data: 81349-mil-s-20708/52 government specification

Replaces National Stock Numbers

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

NSN	Name	Date
5990-00-553-6709	No Name Available	07/06/1998

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
23CX6	Transmitter Synchro
23CX6D	Transmitter Synchro
397-001-024	Transmitter Synchro
AS20708/52	Transmitter Synchro
AY240BA 9 A1	Transmitter Synchro
M20708/52-001	Transmitter Synchro
M20708/52-01D	Transmitter Synchro
M20708/52C-001	Transmitter Synchro
MIL-S-20708/52	Transmitter Synchro
SAE-AS20708/52	Transmitter Synchro
VCX23/36-6B	Transmitter Synchro