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23TR4 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SYNCHRO,RECEIVER is a the manufacturer industrial component. Key specifications include length: 0.2500 INCHES NOMINAL SHOULDER IN, body_size: 23, body_style: STANDARD ROUND D, shaft_type: ROUND, THREADED SINGLE SHAFT, pilot_length: 0.0360 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN, shaft_length: 0.6930 INCHES MINIMUM AND 0.7190 INCHES MAXIMUM SINGLE SHAFT IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5990-00-636-4111, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
23TR4
NSN: 5990-00-636-4111
FSC: 5990
CAGE: 95542 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
length0.2500 INCHES NOMINAL SHOULDER IN
body_size23
body_styleSTANDARD ROUND D
shaft_typeROUND, THREADED SINGLE SHAFT
pilot_length0.0360 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN
shaft_length0.6930 INCHES MINIMUM AND 0.7190 INCHES MAXIMUM SINGLE SHAFT IN
body_diameter1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM IN
body_materialSTEEL CORROSION RESISTING
overall_length4.2940 INCHES MAXIMUM IN
pilot_diameter0.5900 INCHES MINIMUM AND 0.6000 INCHES MAXIMUM IN
shaft_diameter0.2402 INCHES MINIMUM AND 0.2405 INCHES MAXIMUM SINGLE SHAFT IN
flange_diameter2.2490 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
NSN5990-00-636-4111
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SYNCHRO,RECEIVER TITLE COMPONENT PN 23TR4 MFR SYNCHRO,RECEIVER
KEY FEATURES
•
FLANGE DIAMETER: 2.2490 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
•
SECOND SHOULDER DIAMETER: 1.9985 INCHES MINIMUM AND 1.9995 INCHES MAXIMUM IN
•
FLANGE THICKNESS: 0.2480 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
•
BODY DIAMETER: 1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM IN
•
BODY STYLE: STANDARD ROUND D
•
SHOULDER DIAMETER: 1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM IN
•
PILOT DIAMETER: 0.5900 INCHES MINIMUM AND 0.6000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER2.2490 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
SECOND SHOULDER DIAMETER1.9985 INCHES MINIMUM AND 1.9995 INCHES MAXIMUM IN
OVERALL LENGTH4.2940 INCHES MAXIMUM IN
FLANGE THICKNESS0.2480 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
BODY DIAMETER1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM IN
BODY STYLESTANDARD ROUND D
SHOULDER DIAMETER1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM IN
PILOT DIAMETER0.5900 INCHES MINIMUM AND 0.6000 INCHES MAXIMUM IN
SECOND SHOULDER LENGTH0.1680 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN
LENGTH0.2500 INCHES NOMINAL SHOULDER IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
VTX23/36-4AInterchangeable
interchangeable cross-reference
interchangeable
23TX4Interchangeable
interchangeable cross-reference
interchangeable
113F2AInterchangeable
interchangeable cross-reference
interchangeable
AY240BA12A1Interchangeable
interchangeable cross-reference
interchangeable
23TX6AInterchangeable
interchangeable cross-reference
interchangeable
SAE-AS20708/94Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 23TR4?
23TR4 is a SYNCHRO,RECEIVER.
What parts can replace 23TR4?
There are 29 known substitutes for 23TR4: VTX23/36-4A, 23TX4, 113F2A and 26 more. Substitute compatibility should be verified for your specific system.
Is 23TR4 still available?
23TR4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026