PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AY-523-3-A1Resolver,electrical

Honeywell Intl Inc Defense Avionics Systems · NSN 5990-00-504-8757 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-504-8757 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-504-8757. Primary manufacturer part number: AY-523-3-A1.
Features
  • Resolver,electrical — FSC 5990
  • Shoulder Diameter: 0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN
  • Undercut Diameter: 0.8350 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN
  • Flange Diameter: 0.9360 INCHES MINIMUM AND 0.9370 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 C
  • Undercut Width: 0.0620 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Body construction
General Description

The Resolver,electrical, cataloged under National Stock Number 5990-00-504-8757, 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 Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-504-8757
Primary Part NumberAY-523-3-A1
Item NameResolver,electrical
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerHoneywell Intl Inc Defense Avionics Systems
StatusACTIVE
Shoulder Diameter0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN
Undercut Diameter0.8350 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN
Flange Diameter0.9360 INCHES MINIMUM AND 0.9370 INCHES MAXIMUM IN
Pilot Diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Flange Thickness0.0620 INCHES NOMINAL IN
Body StyleSTANDARD ROUND C
Undercut Width0.0620 INCHES NOMINAL IN
Length0.0630 INCHES NOMINAL SHOULDER IN
Plus J Zrs Reactance in Ohms138.00 NOMINAL
Alignment Hole Bolt Circle Diameter0.6780 INCHES NOMINAL IN
Shaft TypeROUND, SLOTTED SINGLE SHAFT
Body Size10
Actuator Friction Torque at Plus 25 Deg Celsius5.0 CENTIMETER-GRAMS NOMINAL CM
Pilot Length0.0380 INCHES NOMINAL IN
Electrical Error Angular Range in Minutes-18.0 TO 18.0
Rotor DC Resistance in Ohms200.00 NOMINAL
Terminal Type and Quantity7 WIRE LEAD
MaterialALUMINUM BODY
Plus J Zso Reactance in Ohms164.00 NOMINAL
Zrs Resistance in Ohms335.00 NOMINAL
Frequency in Hertz400.0 NOMINAL
Alignment Hole Depth0.0620 INCHES MAXIMUM IN
Phase Shift Angle in Deg18.500 INPUT TO OUTPUT NOMINAL
Stator DC Resistance in Ohms42.00 NOMINAL
Rotor Input Electrical Power Rating600.0 MILLIWATTS NOMINAL
Terminal LocationREAR
Plus J Zro Reactance in Ohms570.00 NOMINAL
Shaft Length0.4130 INCHES NOMINAL SINGLE SHAFT IN
Zro Resistance in Ohms308.00 NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5945-00-503-6521714056 INTERCHANGEABLE
Solenoid,electrical
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-01-194-0467714056 INTERCHANGEABLE
Seal,plain
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5998-01-220-4896714-056 INTERCHANGEABLE
Circuit Card Assembly
Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine
Cross-Reference Index
Part NumberManufacturer
AY-523-3-A1 Honeywell Intl Inc Defense Avionics Systems (USA)
733191-1 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
1290299-32 Honeywell Intl Inc Defense Avionics Systems (USA)
714056 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
5945-00-503-6521INTERCHANGEABLE
SOLENOID,ELECTRICAL
714056
5330-01-194-0467INTERCHANGEABLE
SEAL,PLAIN
714056
5998-01-220-4896INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
714-056

Frequently Asked Questions

What is NSN 5990-00-504-8757?

NSN 5990-00-504-8757 is a Resolver,electrical, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-504-8757?

NSN 5990-00-504-8757 has 4 cross-referenced part numbers: AY-523-3-A1 (Honeywell Intl Inc Defense Avionics Systems), 733191-1 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems), 1290299-32 (Honeywell Intl Inc Defense Avionics Systems), 714056 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5990-00-504-8757?

There are 3 known substitutes for 5990-00-504-8757: 5945-00-503-6521, 5330-01-194-0467, 5998-01-220-4896. Verify interchangeability with system specifications before substitution.

What are the specifications of AY-523-3-A1?

Key specifications for AY-523-3-A1: Shoulder Diameter: 0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN; Undercut Diameter: 0.8350 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN; Flange Diameter: 0.9360 INCHES MINIMUM AND 0.9370 INCHES MAXIMUM IN; Pilot Diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM 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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