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Technical Data Sheet
PartsTable / MRO / RA20A1SA502AK
RA20A1SA502AK ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 0.625 INCHES NOMINAL IN, shaft_style: ROUND, SLOTTED, shaft_length: 0.500 INCHES NOMINAL IN, actuator_type: SINGLE SHAFT, body_diameter: 1.280 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-00-108-5588, 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
MRO→ MRO_GENERAL→ RA20A1SA502AK
NSN: 5905-00-108-5588
FSC: 5905
CAGE: 81350 — JOINT ARMY-NAVY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
body_length0.625 INCHES NOMINAL IN
shaft_styleROUND, SLOTTED
shaft_length0.500 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter1.280 INCHES NOMINAL IN
shaft_diameter0.250 INCHES NOMINAL IN
mounting_methodSTANDARD BUSHING
section_quantity1
nonturn_device_radius0.531 INCHES NOMINAL IN
screw_thread_diameter0.375 INCHES NOMINAL IN
mounting_bushing_length0.375 INCHES NOMINAL IN
NSN5905-00-108-5588
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,NON TITLE COMPONENT PN RA20A1SA502AK MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
TERMINAL TYPE AND QUANTITY: 3 TAB, SOLDER LUG
•
TEST DATA DOCUMENT: 81349-MIL-R-19 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", "NOMINAL", ETC.).
•
BODY LENGTH: 0.625 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: UNEF
•
SHAFT LENGTH: 0.500 INCHES NOMINAL IN
•
NONTURN DEVICE LOCATION: AT 9 OCLOCK
•
SHAFT DIAMETER: 0.250 INCHES NOMINAL IN
•
MOUNTING BUSHING LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL TYPE AND QUANTITY3 TAB, SOLDER LUG
TEST DATA DOCUMENT81349-MIL-R-19 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", "NOMINAL", ETC.).
BODY LENGTH0.625 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNEF
SHAFT LENGTH0.500 INCHES NOMINAL IN
NONTURN DEVICE LOCATIONAT 9 OCLOCK
SHAFT DIAMETER0.250 INCHES NOMINAL IN
MOUNTING BUSHING LENGTH0.375 INCHES NOMINAL IN
SCREW THREAD DIAMETER0.375 INCHES NOMINAL IN
ACTUATOR TYPESINGLE SHAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
4171780-039Interchangeable
interchangeable cross-reference
interchangeable
MILR19-2Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-19/2Interchangeable
interchangeable cross-reference
interchangeable
RA20NASA502AInterchangeable
Same NIIN cross-reference
interchangeable
JANR19TYPERA20A1SA502AKInterchangeable
Same NIIN cross-reference
interchangeable
JANR19Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RA20A1SA502AK?
RA20A1SA502AK is a RESISTOR,VARIABLE,WIRE WOUND,NON. It is classified as a MRO (MRO_GENERAL).
What parts can replace RA20A1SA502AK?
There are 8 known substitutes for RA20A1SA502AK: 4171780-039, MILR19-2, MIL-PRF-19/2 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RA20A1SA502AK?
RA20A1SA502AK is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-00-108-5588. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026