PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R1011-1ASynchro,transmitter

Kearfott Corporation Div Guidance and Navigation Division · NSN 5990-00-578-7452 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-578-7452 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-578-7452. Primary manufacturer part number: R1011-1A.
Features
  • Synchro,transmitter — FSC 5990
  • Undercut Diameter: 0.6870 INCHES NOMINAL IN
  • Flange Diameter: 0.7450 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN
  • Pilot Diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
  • Flange Thickness: 0.0620 INCHES NOMINAL IN
  • Body Style: STANDARD ROUND A
  • Undercut Width: 0.0620 INCHES NOMINAL IN
  • Rotor Input Current Rating: 114.0 MILLIAMPERES NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-00-578-7452, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Kearfott Corporation Div Guidance and Navigation Division. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-578-7452
Primary Part NumberR1011-1A
Item NameSynchro,transmitter
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerKearfott Corporation Div Guidance and Navigation Division
StatusACTIVE
Undercut Diameter0.6870 INCHES NOMINAL IN
Flange Diameter0.7450 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN
Pilot Diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Flange Thickness0.0620 INCHES NOMINAL IN
Body StyleSTANDARD ROUND A
Undercut Width0.0620 INCHES NOMINAL IN
Rotor Input Current Rating114.0 MILLIAMPERES NOMINAL
Frequency in Hertz400.0 NOMINAL
Body MaterialSTEEL CORROSION RESISTING
Shaft Slot Width0.0250 INCHES NOMINAL SINGLE SHAFT IN
Shaft TypeROUND, SLOTTED SINGLE SHAFT
Terminal LocationREAR
Rotor Input Voltage Rating in Volts26.0 NOMINAL
Shaft Slot Depth0.0300 INCHES NOMINAL SINGLE SHAFT IN
Maximum Fundamental Null Voltage in Millivolts Per Volt15.00 OUTPUT
Body Size8
Rotor DC Resistance in Ohms59.00 NOMINAL
Phase Shift Angle in Deg13.000 INPUT TO OUTPUT NOMINAL
Terminal Type and Quantity5 WIRE LEAD
Zso Resistance in Ohms17.00 NOMINAL
Plus J Zro Reactance in Ohms260.00 NOMINAL
Zro Resistance in Ohms70.00 NOMINAL
Rotor Input Electrical Power Rating800.0 MILLIWATTS NOMINAL
Mounting Surface to Terminal End Distance1.2400 INCHES MAXIMUM IN
Shaft Diameter0.1195 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM SINGLE SHAFT IN
Transformation Ratio0.454 ROTOR TO STATOR NOMINAL
Electrical Error Angular Range in Minutes-7.0 TO 7.0
Stator DC Resistance in Ohms18.00 NOMINAL
Shaft Length0.4610 INCHES MINIMUM AND 0.4850 INCHES MAXIMUM SINGLE SHAFT IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5950-00-067-217412-333-1 INTERCHANGEABLE
Tube,core,transfer Switch
Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated
5930-00-070-18763001-7-09 INTERCHANGEABLE
Switch,thermostatic
Honeywell International Inc. Dba Honeywell Div Sensing and Control
5977-00-237-1614825191 INTERCHANGEABLE
Brush Set,electrical Contact
Mack Trucks Inc Parts Opn
6210-00-435-9325 INTERCHANGEABLE
Light,indicator
6750-01-427-0869 INTERCHANGEABLE
Film,photographic
Cross-Reference Index
Part NumberManufacturer
5M451-1A10 The Boeing Company Div Defense (USA)
PS960100002-1 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
R1011-1A PRIMARY Kearfott Corporation Div Guidance and Navigation Division (USA)
123-33-1 Singer Co the Kearfott Div (USA)
G355635-1 Smiths Detection Inc. Dba Smiths Detection Inc Casc (USA)
910083-7 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
825191 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5950-00-067-2174INTERCHANGEABLE
TUBE,CORE,TRANSFER SWITCH
12-333-1
5930-00-070-1876INTERCHANGEABLE
SWITCH,THERMOSTATIC
3001-7-09
5977-00-237-1614INTERCHANGEABLE
BRUSH SET,ELECTRICAL CONTACT
825191
6210-00-435-9325INTERCHANGEABLE
LIGHT,INDICATOR
6750-01-427-0869INTERCHANGEABLE
FILM,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 5990-00-578-7452?

NSN 5990-00-578-7452 is a Synchro,transmitter, manufactured by Kearfott Corporation Div Guidance and Navigation Division, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-578-7452?

NSN 5990-00-578-7452 has 7 cross-referenced part numbers: 5M451-1A10 (The Boeing Company Div Defense), PS960100002-1 (Lockheed Martin Corporation Div Rotary and Mission Systems), R1011-1A (Kearfott Corporation Div Guidance and Navigation Division), 123-33-1 (Singer Co the Kearfott Div), G355635-1 (Smiths Detection Inc. Dba Smiths Detection Inc Casc) and 2 more.

What NSN replaces 5990-00-578-7452?

There are 5 known substitutes for 5990-00-578-7452: 5950-00-067-2174, 5930-00-070-1876, 5977-00-237-1614 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R1011-1A?

Key specifications for R1011-1A: Undercut Diameter: 0.6870 INCHES NOMINAL IN; Flange Diameter: 0.7450 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN; Pilot Diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Flange Thickness: 0.0620 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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