Receiver-transmitter Synchro

NSN: 5990-00-997-5237 | Model: M20708/32-01A

A synchro having a dual purpose. It may be used in applications requiring either a receiver or transmitter. For synchros having a single purpose, see synchro, receiver and synchro, transmitter.

NSN Properties and Flags

NATO Stock Number

5990-00-997-5237

DEMIL

Yes - ITAR Controlled (Code D)

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

0.1873 inches single shaft and 0.1875 inches single shaft

Shaft Length

0.5400 inches single shaft

Fragility Factor

Moderately rugged

Maximum Tempurature Rise

35.0 degrees celsius

Body Size

Rotor Input Voltage Rating In Volts

115.0

Frequency In Hertz

400.0

Rotor Input Current Rating

400.0 milliamperes

Rotor Input Electrical Power Rating

4.0 watts

Zss Impedance Magnitude In Ohms

Between 16.00 and 21.00

Zss Impedance Angle In Deg

Between 38.00 and 45.00

Phase Shift Angle In Deg

4.000 input to output

Maximum Fundamental Null Voltage In Millivolts Per Volt

50.00 output

Maximum Total Null Voltage Output In Millivolts Per Volt

100.00

Electrical Error Angular Range In Minutes

-8.0/+8.0

Spline Tooth Quantity

21 single shaft

Receiver Error Angular Range In Minutes

-45.0/+45.0

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

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

Transformation Ratio

0.783 stator to rotor

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-20708/32 government specification

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M221T2436	2021-03-08	PMCMV	1 EA
SPE7M219T5534	2019-10-11	PMCMV	9 EA
SPE7M218T2435	2018-04-05	PMCMV	9 EA

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 5990-00-997-5237 Datasheet

Supply Class (FSC):

Synchros And Resolvers

Cross Reference:

M20708/32-01A
MIL-S-20708/32
18TRX4A
450904-0983
27719
674761
M20708-32E001
1.793485
18TRX4A
M20708/32-001

Cage Codes:

Military Specifications (CAGE 81349)
Northrop Grumman Litef Gmbh (CAGE D4856)
J Richard Weggel (CAGE 09958)
Lockheed Martin Corporation (CAGE 56232)
Raytheon Anschuetz Gmbh (CAGE D2865)
Consilium Gmbh (CAGE C0689)

Replacements:

5990-00-997-5237 replaces 5990-00-467-1937

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
D
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
7
MGMT_CTL
Sf9eh-v
Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3,511.44 to $5,852.41..
Does NSN 5990-00-997-5237 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, Bulgaria, Brazil, Spain, Malaysia, Australia, Belgium, Canada, France, Germany, Republic Of Korea, United Kingdom, Netherlands, Portugal, Italy, Greece, and Turkey
What is the NIIN of NSN 5990-00-997-5237?
009975237 or 00-997-5237
Does NSN 5990-00-997-5237 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-997-5237?
Solicitation SPE7M221T2436 for qty 1 on 03/25/2021
When was this national stock number assigned to the federal catalog?
Nov 18, 1966