Model: M20708/32-001

Receiver-transmitter Synchro

Properties:

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
18
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
4
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
NSN
5990-00-997-5237
Part Number
M20708/32-001
Description
Synchro,receiver-transmitter
CAGE
81349

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.

Part M20708/32-001 NSN 5990-00-997-5237

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
27218
FIIG:
A07800
Concept No.:
1
App. Key:
F
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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