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Differential Transmitter Synchro

NSN: 5990-00-925-6614 | Model: M20708/64-001

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.

NSN Properties and Flags
NATO Stock Number
5990-00-925-6614
DEMIL
NO
Body Material
Steel, stainless
Body Style
Standard round d
Shoulder Diameter
Between 2.6950 inches and 2.7000 inches
Pilot Diameter
0.5000 inches
Second Shoulder Diameter
Between 2.7490 inches and 2.7500 inches
Second Shoulder Length
0.3750 inches
Overall Length
5.3550 inches
Flange Diameter
Between 3.0990 inches and 3.1000 inches
Flange Thickness
0.2500 inches
Body Diameter
2.7000 centimeters
Shaft Diameter
0.2403 inches single shaft and 0.2405 inches single shaft
Shaft Length
0.7300 inches single shaft
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
20.0 degrees celsius
Body Size
31
Stator Input Voltage Rating In Volts
90.0
Stator Input Current Rating
190.0 milliamperes
Stator Input Electrical Power Rating
10.2 watts
Frequency In Hertz
400.0
Zrs Impedance Magnitude In Ohms
4.80
Zrs Impedance Angle In Deg
44.00
Rotor Dc Resistance In Ohms
1.20
Stator Dc Resistance In Ohms
1.00
Phase Shift Angle In Deg
1.500 input to output
Electrical Error Angular Range In Minutes
-8.0/+8.0
Spline Tooth Quantity
22 single shaft
Actuator Friction Torque At Plus 25 Deg Celsius
0.50 inch-ounces
Torque Gradient Per Angular Deg
0.600 inch-ounces
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0008 inches
Shaft End Play
0.0030 inches
Pilot Length
0.0300 inches
Shoulder Length
0.6150 inches
Aft Of First Flange Diameter
2.7500 inches
Mounting Surface To Terminal End Distance
4.6250 inches
Spline Tooth Diametral Pitch
96 single shaft
Shaft Maximum Runout
0.0008 inches
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
0.3640 inches single shaft
Shaft Type
Spline w/threads single shaft
Transformation Ratio
1.154 rotor to stator
Shaft Thread Size
0.2500 inches single shaft
Shaft Radial Play Determining Weight
16.0 ounces
Shaft End Play Determining Weight
16.0 ounces
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", "", etc.).
Terminal Type And Quantity
6 screw
Specification Data
81349-mil-s-20708/64 government specification

Pricing and Availability

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NSN 5990-00-925-6614 Datasheet

Supply Class (FSC):
Synchros And Resolvers
Cross Reference:
  • M20708/64-001
  • MIL-S-20708/64
  • 31TDX4C
  • 31TDX4B
Cage Codes:
  • Military Specifications (CAGE 81349)
Schedule B & Trade:
  • Schedule B: 9014900000 (NAICS 334511)

    Parts & accessories for direction finding compasses and other navigational instruments and appliances

  • SITC: 87412

    Parts and accessories of navigational instruments and appliances

  • End Use: 22220

    Marine engines, parts

Identification:
HMIC

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

PMIC

A - Item does not contain precious metal.

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    062120 - Generators/motors/parts noi

  • WCC:

    590 - Generators and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LCL:

    Q - 70.0

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    Y
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9b-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $506.29 to $843.82..
Does NSN 5990-00-925-6614 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy, and Spain
What is the NIIN of NSN 5990-00-925-6614?
009256614 or 00-925-6614
Does NSN 5990-00-925-6614 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-925-6614?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Feb 02, 1966