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Transmitter Synchro

NSN: 5990-00-929-0500 | Model: 18CX4B
ITAR Registered seal

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the stator into a receiver synchro, a control transformer or differential synchro is dependent upon the position of its rotor. Does not include variable resistors, goniometers, variable transformers, or items with dials.

NSN Properties and Flags
NATO Stock Number
5990-00-929-0500
DEMIL
Yes - ITAR Controlled (Code D)
Body Material
Steel, corrosion resisting
Body Style
Standard round c
Shoulder Diameter
Between 1.5615 inches and 1.5620 inches
Pilot Diameter
0.0375 inches
Overall Length
3.0600 inches
Flange Diameter
Between 1.7450 inches and 1.7500 inches
Flange Thickness
0.0930 inches
Undercut Diameter
1.6250 inches
Undercut Width
0.0780 inches
Shaft Diameter
0.1870 inches single shaft and 0.1872 inches single shaft
Shaft Length
0.5400 inches single shaft
Fragility Factor
Moderately rugged
End Application
Qgun fire control system, mk 68; ticonderoga class cg (47); forrestal class cv; los angeles class ssn (688); nimitz class cvn; kidd class ddg; sturgeon class ssn (637); virginia class cgn (41); spruance class dd (963)
Maximum Tempurature Rise
20.0 degrees celsius
Body Size
18
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
110.0 milliamperes
Rotor Input Electrical Power Rating
900.0 milliwatts
Zro Impedance Magnitude In Ohms
Between 1045.00 and 1400.00
Zro Impedance Angle In Deg
Between 84.00 and 87.50
Zss Impedance Magnitude In Ohms
Between 40.00 and 57.00
Zss Impedance Angle In Deg
Between 34.00 and 48.00
Phase Shift Angle In Deg
1.500 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
40.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
60.00
Electrical Error Angular Range In Minutes
-6.0/+6.0
Spline Tooth Quantity
21 single shaft
Torque Gradient Per Angular Deg
0.100 inch-ounces
Alignment Hole Quantity
4
Pilot Length
0.0400 inches
Shoulder Length
0.1320 inches
Mounting Surface To Terminal End Distance
2.5200 inches
Spline Tooth Diametral Pitch
121 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
0.2000 inches single shaft
Shaft Type
Spline w/threads single shaft
Alignment Hole Depth
0.1250 inches
Criticality Code Justification
Feat
Transformation Ratio
0.785 rotor to stator
Alignment Hole Bolt Circle Diameter
1.2500 inches
Shaft Thread Size
0.190 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", "", etc.).
Terminal Type And Quantity
5 screw
Specification Data
81349-mil-s-20708/28 government specification
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE7M519T862H 2019-09-30 PMCM1 55 EA
SPE7M519T499G 2019-05-31 PMCM1 79 EA
SPE7M517TN660 2017-07-10 PMCM1 75 EA
SPE7M517TC979 2017-04-13 PMCMD 73 EA
SPE7M117Q0479 2017-01-24 PMCMU 75 EA
SPE7MC16TF459 2016-06-23 PMCMU 33 EA
SPE7MC16TE674 2016-06-13 PMCMU 30 EA
SPE7M516T7985 2016-04-18 PMCMV 43 EA
SPE7M115Q2636 2015-03-02 PMCMX 46 EA
SPE7M115Q1216 2015-02-21 PMCMU 40 EA

Inventory Check

The last inventory check on this NSN was done on 08/23/2024. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 17
  • Serviceable: 1
  • As Removed: 2
  • New: 4

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Qty:
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NSN 5990-00-929-0500 Datasheet

Supply Class (FSC):
Synchros And Resolvers
Cross Reference:
  • 18CX4B
  • M20708-21D001
  • 18CX46
  • AS20708/28
  • 18CX4D
  • VCX18-4N1
  • 18CX1253
  • 18CX4D
  • N14503
  • 1136443
  • 2.012948
  • 1,792351
  • VBE415-10
  • 59 000-014
  • 352250005254
  • M20708/28-01D
  • 450900-2994-002
  • 450900-2994-2
  • M20708/28D-001
  • MIL-S-20708/28
  • M20708/28-01D
Cage Codes:
  • Military Specifications (CAGE 81349)
  • Martin Marietta Technologies Inc (CAGE 54497)
  • Society Of Automotive Engineers Inc (CAGE 81343)
  • General Dynamics Global Imaging (CAGE 10112)
  • Ametek Technical & Industrial (CAGE 14404)
  • Tce Canada Ltd (CAGE 81574)
  • Belfort Instrument Company (CAGE 82205)
  • Raytheon Anschuetz Gmbh (CAGE D2865)
  • Thales Nederland (CAGE H0203)
  • Rockwell Collins Deutschland (CAGE D9853)
  • Northrop Grumman Litef Gmbh (CAGE D4856)
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

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature but does have other critical featur (s) such as tolerance, fit restrictions 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
    D
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    7
  • MGMT_CTL
    -------
  • Repariability
    If condemned or uneconomically repairable , then dispose at direct support (ds) level.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3,149.45 to $5,249.08..
Does NSN 5990-00-929-0500 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 Air Force, Department Of The Navy, U.s. Coast Guard, Poland, Brazil, Spain, Malaysia, Australia, Belgium, Canada, France, Germany, Republic Of Korea, United Kingdom, Netherlands, Portugal, Italy, Denmark, Greece, and Turkey
What is the NIIN of NSN 5990-00-929-0500?
009290500 or 00-929-0500
Does NSN 5990-00-929-0500 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-929-0500?
Solicitation SPE7M519T862H for qty 55 on 09/18/2019
When was this national stock number assigned to the federal catalog?
Sep 02, 1966