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Technical Data Sheet
RA20NASA502A ✓ 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: 0.570 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN, shaft_style: ROUND, SLOTTED, shaft_length: 0.500 INCHES NOMINAL IN, actuator_type: SINGLE SHAFT, body_diameter: 1.100 INCHES MINIMUM AND 1.310 INCHES MAXIMUM 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 RA20NASA502A
NSN: 5905-00-108-5588
FSC: 5905
CAGE: 01121 — ROCKWELL AUTOMATION, INC. DBA ROCKWELL AUTOMATION (USA)
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
body_length0.570 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
shaft_styleROUND, SLOTTED
shaft_length0.500 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter1.100 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
overall_length1.039 INCHES MINIMUM AND 1.201 INCHES MAXIMUM IN
shaft_diameter0.248 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
mounting_methodSTANDARD BUSHING
overall_diameter1.750 INCHES NOMINAL IN
section_quantity1
terminal_locationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
NSN5905-00-108-5588
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,NON TITLE COMPONENT PN RA20NASA502A 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
JANR19TYPERA20A1SA502AKInterchangeable
Same NIIN cross-reference
interchangeable
RA20A1SA502AKInterchangeable
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 RA20NASA502A?
RA20NASA502A is a RESISTOR,VARIABLE,WIRE WOUND,NON. It is classified as a MRO (MRO_GENERAL).
What parts can replace RA20NASA502A?
There are 8 known substitutes for RA20NASA502A: 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 RA20NASA502A?
RA20NASA502A 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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