PartsTable
Technical Data Sheet
PartsTable / MRO / 20SR3A1
20SR3A1 ✓ 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,PRE. Key specifications include shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flat_height: 0.467 INCHES NOMINAL SINGLE ACTUATOR IN, shaft_length: 1.812 INCHES NOMINAL SINGLE ACTUATOR IN, overall_width: 6.750 INCHES NOMINAL IN, pole_quantity: 1 EACH SECTION FRONT, terminal_type: THREADED STUD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-548-7945, 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→ 20SR3A1
NSN: 5930-00-548-7945
FSC: 5930
CAGE: 82121 — ELECTRO SWITCH CORP. DBA ELECTRO SWITCH CORP (USA)
SPECIFICATIONS
shaft_typeROUND, FLATTED SINGLE ACTUATOR
flat_height0.467 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length1.812 INCHES NOMINAL SINGLE ACTUATOR IN
overall_width6.750 INCHES NOMINAL IN
pole_quantity1 EACH SECTION FRONT
terminal_typeTHREADED STUD
overall_height6.750 INCHES NOMINAL IN
shaft_diameter0.625 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity2 EACH SECTION FRONT
features_providedACTUATOR KNOB
first_flat_length0.875 INCHES NOMINAL SINGLE ACTUATOR IN
knob_manufacturer_code80064
NSN5930-00-548-7945
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN 20SR3A1 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
TEST DATA DOCUMENT: 81349-MIL-S-15291 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.).
•
KNOB MANUFACTURER CODE: 80064
•
LONGEST HORIZONTAL DISTANCE BETWEEN MOUNTING CENTERS: 5.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
•
SWITCH CONTACT BASIC DESIGN: NONPILE-UP SYMMETRICAL
•
POLE QUANTITY: 1 EACH SECTION FRONT
•
SWITCH ACTUATOR INDEXING POSITION QUANTITY: 4 SINGLE ACTUATOR
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT6.750 INCHES NOMINAL IN
TEST DATA DOCUMENT81349-MIL-S-15291 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.).
OVERALL WIDTH6.750 INCHES NOMINAL IN
KNOB MANUFACTURER CODE80064
LONGEST HORIZONTAL DISTANCE BETWEEN MOUNTING CENTERS5.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
SWITCH CONTACT BASIC DESIGNNONPILE-UP SYMMETRICAL
POLE QUANTITY1 EACH SECTION FRONT
SWITCH ACTUATOR INDEXING POSITION QUANTITY4 SINGLE ACTUATOR
KNOB MANUFACTURER PART NUMBER9S5360PC6
SHAFT DIAMETER0.625 INCHES NOMINAL SINGLE ACTUATOR IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
NECO-1829Interchangeable
interchangeable cross-reference
interchangeable
PA9303AND9303Interchangeable
interchangeable cross-reference
interchangeable
PL418-5Interchangeable
interchangeable cross-reference
interchangeable
P7936Interchangeable
interchangeable cross-reference
interchangeable
972XInterchangeable
interchangeable cross-reference
interchangeable
18302AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20SR3A1?
20SR3A1 is a RESISTOR,VARIABLE,WIRE WOUND,PRE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20SR3A1?
There are 24 known substitutes for 20SR3A1: NECO-1829, PA9303AND9303, PL418-5 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20SR3A1?
20SR3A1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-548-7945. 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