Differential Transmitter Synchro

NSN: 5990-00-018-9721 | Model: 23TDX6

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

5990-00-018-9721

DEMIL

Body Material

Steel, stainless

Body Style

Standard round d

Shoulder Diameter

Between 1.9850 inches and 1.9900 inches

Pilot Diameter

0.5950 inches

Second Shoulder Diameter

Between 1.9985 inches and 1.9995 inches

Second Shoulder Length

0.1700 inches

Overall Length

4.5490 inches

Flange Diameter

Between 2.2490 inches and 2.2500 inches

Flange Thickness

0.2500 inches

Body Diameter

1.9900 inches

Shaft Diameter

0.2403 inches single shaft and 0.2405 inches single shaft

Shaft Length

0.7190 inches single shaft

Maximum Tempurature Rise

25.0 degrees celsius

Body Size

Stator Input Voltage Rating In Volts

90.0

Stator Input Current Rating

215.0 milliamperes

Stator Input Electrical Power Rating

4.8 watts

Frequency In Hertz

60.0

Zso Impedance Magnitude In Ohms

Between 370.00 and 460.00

Zso Impedance Angle In Deg

Between 74.00 and 78.00

Zrs Impedance Magnitude In Ohms

Between 175.00 and 220.00

Zrs Impedance Angle In Deg

Between 15.00 and 20.00

Phase Shift Angle In Deg

11.500 input to output

Electrical Error Angular Range In Minutes

-6.0 to 6.0

Spline Tooth Quantity

22 single shaft

Actuator Friction Torque At Plus 25 Deg Celsius

0.20 inch-ounces

Torque Gradient Per Angular Deg

0.030 inch-ounces

Shaft Radial Play Test Point

0.125 inches

Shaft Maximum Radial Play

0.0010 inches

Shaft End Play

0.0025 inches

Pilot Length

0.0430 inches

Shoulder Length

0.2500 inches

Aft Of First Flange Diameter

Between 1.9985 inches and 1.9995 inches

Mounting Surface To Terminal End Distance

3.8300 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

0.2900 inches single shaft

Shaft Type

Spline w/threads single shaft

Transformation Ratio

1.154 rotor to stator

Shaft Thread Size

0.250 inches single shaft

Shaft Radial Play Determining Weight

8.0 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-20708/55 government specification

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.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 5990-00-018-9721 Datasheet

Supply Class (FSC):

Synchros And Resolvers

Cross Reference:

23TDX6
23TDX6B
M20708/55-001
M20708-550-001
M20708/55-01C
MIL-S-20708/55
23TDX6C
23TDX1229
23TDX6

Cage Codes:

Military Specifications (CAGE 81349)
Ametek Technical & Industrial (CAGE 14404)
General Dynamics Global Imaging (CAGE 10112)

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
Z
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
Q2200x-
Repariability
This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3,881.48 to $6,469.13..
Does NSN 5990-00-018-9721 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 Army, Department Of The Air Force, Department Of The Navy, U.s. Coast Guard, Spain, Canada, Germany, Republic Of Korea, United Kingdom, Portugal, Italy, Denmark, Norway, Greece, and Turkey
What is the NIIN of NSN 5990-00-018-9721?
000189721 or 00-018-9721
Does NSN 5990-00-018-9721 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-018-9721?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Apr 25, 1967