Receiver-transmitter Synchro

NSN: 5990-00-905-9556 | Model: 18TRX6A

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

5990-00-905-9556

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

0.1870 inches single shaft and 0.1872 inches single shaft

Shaft Length

0.5400 inches single shaft

Fragility Factor

Moderately rugged

Maximum Tempurature Rise

40.0 degrees celsius

Body Size

Rotor Input Voltage Rating In Volts

115.0

Frequency In Hertz

60.0

Rotor Input Current Rating

100.0 milliamperes

Rotor Input Electrical Power Rating

4.0 watts

Zss Impedance Magnitude In Ohms

Between 350.00 and 430.00

Zss Impedance Angle In Deg

Between 18.00 and 22.00

Phase Shift Angle In Deg

16.000 input to output

Maximum Fundamental Null Voltage In Millivolts Per Volt

50.00 output

Maximum Total Null Voltage Output In Millivolts Per Volt

300.00

Electrical Error Angular Range In Minutes

-6.0/+6.0

Spline Tooth Quantity

21 single shaft

Receiver Error Angular Range In Minutes

-45.0/+45.0

Torque Gradient Per Angular Deg

0.050 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

Criticality Code Justification

Feat

Transformation Ratio

0.783 stator to rotor

Alignment Hole Bolt Circle Diameter

1.2500 inches

Shaft Thread Size

0.190 inches single shaft

Special Features

Stream (std. Tensioned replenishment at sea method)

Test Data Document

81343-as20708 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

81343-as20708/35 professional/industrial association specification

Inventory Check

The last inventory check on this NSN was done on 03/20/2024. Due to rapid changes in inventory this may not be the current stock qty.

As Removed: 1
New Surplus: 1
New: 13
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 5990-00-905-9556 Datasheet

Supply Class (FSC):

Synchros And Resolvers

Cross Reference:

18TRX6A
M20709-35-001
AS20708/35
TRX18-6N1
988659
988664
LD287652
18TRX6B
18TRX6
167620-1
685021C30004-1
2.013030
NB23-070
M20708/35-01B
MILS16892TYPEN018TR6A
MIL-S-20708/35
M20708-35-001
M20708/35-01B
AS20708/35

Cage Codes:

Military Specifications (CAGE 81349)
Society Of Automotive Engineers Inc (CAGE 81343)
General Dynamics Global Imaging (CAGE 10112)
Navair and Navsea Managed (CAGE 10001)
Raytheon Company (CAGE 49956)
Electric Boat Corporation (CAGE 96169)
Raytheon Anschuetz Gmbh (CAGE D2865)
Sae Customer Service (CAGE 0VH01)

Replacements:

5990-00-905-9556 replaces 5990-00-503-0383
5990-00-905-9556 replaces 5990-00-717-3687
5990-00-905-9556 replaces 5990-00-781-7368
5990-00-905-9556 replaces 5990-00-892-5277
5990-00-905-9556 replaces 5990-00-946-2025

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.

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
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 $5,424.85 to $9,041.42..
Does NSN 5990-00-905-9556 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, National Weather Service, Poland, Brazil, Spain, Malaysia, Australia, Canada, Germany, Republic Of Korea, United Kingdom, Netherlands, Portugal, Italy, Denmark, Norway, Greece, and Turkey
What is the NIIN of NSN 5990-00-905-9556?
009059556 or 00-905-9556
Does NSN 5990-00-905-9556 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-00-905-9556?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jun 22, 1966