Control Transformer Synchro

NSN: 5990-00-988-7902 | Model: 191599

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

5990-00-988-7902

DEMIL

Body Material

Steel, stainless

Body Style

Standard round c

Shoulder Diameter

Between 1.5615 inches and 1.5620 inches

Pilot Diameter

Between 0.9370 inches and 0.9375 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

Maximum Tempurature Rise

25.0 degrees celsius

Body Size

Stator Input Voltage Rating In Volts

115.0

Stator Input Current Rating

40.0 milliamperes

Stator Input Electrical Power Rating

950.0 milliwatts

Frequency In Hertz

60.0

Zro Impedance Magnitude In Ohms

Between 2875.00 and 3375.00

Zro Impedance Angle In Deg

Between 76.00 and 80.00

Zss Impedance Magnitude In Ohms

Between 660.00 and 810.00

Zss Impedance Angle In Deg

Between 9.00 and 13.00

Phase Shift Angle In Deg

11.000 input to output

Maximum Fundamental Null Voltage In Millivolts Per Volt

30.00 output

Maximum Total Null Voltage Output In Millivolts Per Volt

85.00

Electrical Error Angular Range In Minutes

-8.0/+8.0

Spline Tooth Quantity

21 single shaft

Torque Gradient Per Angular Deg

0.100 inch-ounces

Alignment Hole Quantity

Pilot Length

0.0400 inches

Shoulder Length

0.1320 inches

Mounting Surface To Terminal End Distance

2.5200 inches

Spline Tooth Diametral Pitch

120 single shaft

Shaft Thread Series Designator

Unf single shaft

Shaft Thread Direction

Right-hand single shaft

Shaft Thread Class

Terminal Location

Rear

Shaft Thread Length

0.2000 inches single shaft

Shaft Type

Spline w/threads single shaft

Alignment Hole Depth

0.1250 inches

Transformation Ratio

0.783 rotor to stator

Alignment Hole Bolt Circle Diameter

1.2500 inches

Shaft Thread Size

0.190 inches single shaft

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-20708/33 government specification

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M119T8068	2019-02-11	PMCMV	1 EA
SPE7M518T01Y9	2018-09-17	PMCM4	1 EA

Inventory Check

The last inventory check on this NSN was done on 04/14/2022. Due to rapid changes in inventory this may not be the current stock qty.

New Surplus: 1
Overhauled: 1
New: 4
Serviceable: 1

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 5990-00-988-7902 Datasheet

Supply Class (FSC):

Synchros And Resolvers

Cross Reference:

191599
MIL-S-20708/33C
AS20708/33
18CX6C
4186800-039
VCX18-6N1
18CX1256
V23401C0006A009
2.013028
59 000-015
M20708/33-01C
M20708/33C-001
18CX6C
MIL-S-20708/33
M20708/33-001
M20708/33-01C

Cage Codes:

Scientific Atlanta Inc (CAGE 10110)
Military Specifications (CAGE 81349)
Society Of Automotive Engineers Inc (CAGE 81343)
Thales Defence & Security (CAGE D2416)
Raytheon Company (CAGE 05869)
General Dynamics Global Imaging (CAGE 10112)
Ametek Technical & Industrial (CAGE 14404)
Siemens Ag Ec R Log (CAGE C0425)
Raytheon Anschuetz Gmbh (CAGE D2865)
Rockwell Collins Deutschland (CAGE D9853)

Replacements:

5990-00-988-7902 replaces 5990-01-162-3450

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:

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 $3,170.87 to $5,284.78..
Does NSN 5990-00-988-7902 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, Poland, Brazil, Spain, Australia, Canada, New Zealand, France, Germany, Republic Of Korea, United Kingdom, Portugal, Italy, Denmark, Greece, and Turkey
What is the NIIN of NSN 5990-00-988-7902?
009887902 or 00-988-7902
Does NSN 5990-00-988-7902 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-988-7902?
Solicitation SPE7M119T8068 for qty 1 on 02/01/2019
When was this national stock number assigned to the federal catalog?
Nov 02, 1966