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Control Transformer Synchro

NSN: 5990-00-121-2134 | Model: SB673-21

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

NSN Properties and Flags
NATO Stock Number
5990-00-121-2134
DEMIL
NO
Body Material
Steel, corrosion resisting
Body Style
Standard round a
Pilot Diameter
0.5000 inches
Overall Length
1.5880 inches
Flange Diameter
0.7500 inches
Flange Thickness
0.0620 inches
Undercut Diameter
0.6910 inches
Undercut Width
0.0620 inches
Shaft Diameter
0.0900 inches single shaft
Shaft Length
0.3750 inches single shaft
Fragility Factor
Moderately rugged
Body Size
8
Stator Input Voltage Rating In Volts
26.0
Stator Input Current Rating
81.0 milliamperes
Stator Input Electrical Power Rating
200.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
250.00
Zso Resistance In Ohms
35.00
Zrs Resistance In Ohms
325.00
Rotor Dc Resistance In Ohms
225.00
Stator Dc Resistance In Ohms
25.00
Phase Shift Angle In Deg
4.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
30.00 input
Maximum Total Null Voltage Output In Millivolts Per Volt
70.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
6.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
3.0 centimeter-grams
Shaft Maximum Radial Play
0.0006 inches
Pilot Length
0.0430 inches
Mounting Surface To Terminal End Distance
1.2410 inches
Terminal Location
Rear
Plus J Zro Reactance In Ohms
625.00
Shaft Slot Depth
0.0250 inches single shaft
Plus J Zso Reactance In Ohms
140.00
Shaft Slot Width
0.0200 inches single shaft
Plus J Zrs Reactance In Ohms
65.00
Shaft Type
Round, slotted single shaft
Transformation Ratio
0.465 rotor to stator
Terminal Type And Quantity
5 wire lead

Pricing and Availability

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NSN 5990-00-121-2134 Datasheet

Supply Class (FSC):
Synchros And Resolvers
Cross Reference:
  • SB673-21
  • 8CT-101-A-5
Cage Codes:
  • Api Harowe Inc (CAGE 06989)
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

U - Precious metal content is unknown

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:

    593 - Motors 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:

    V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    J
  • 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 $1,561.52 to $2,602.53..
Does NSN 5990-00-121-2134 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
What is the NIIN of NSN 5990-00-121-2134?
001212134 or 00-121-2134
Does NSN 5990-00-121-2134 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-121-2134?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Oct 23, 1968