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MS-20B-40118 — SWITCH,ROTARY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

MS-20B-40118: SWITCH,ROTARY.

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND SINGLE ACTUATOR, shaft_length: 0.438 INCHES NOMINAL SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, pole_quantity: 1 EACH SECTION FRONT, terminal_type: TAB, SOLDER LUG, thread_length: 0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. This part is cataloged in the U.S.

Government catalog under NSN 5930-00-566-9604, 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
MS-20B-40118
NSN: 5930-00-566-9604
FSC: 5930 — Switches
CAGE: 74217 — RADIO SWITCH CORP (USA)
SPECIFICATIONS
shaft_typeROUND SINGLE ACTUATOR
shaft_length0.438 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
pole_quantity1 EACH SECTION FRONT
terminal_typeTAB, SOLDER LUG
thread_length0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
overall_length2.594 INCHES NOMINAL IN
shaft_diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity19 EACH SECTION FRONT
mounting_methodTHREADED BUSHING SINGLE MOUNTING FACILITY
overall_diameter2.656 INCHES MAXIMUM IN
style_designatorCIRCULAR WAFER, BUSHING MOUNT
NSN5930-00-566-9604
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,ROTARY TITLE COMPONENT PN MS-20B-40118 MFR SWITCH,ROTARY
KEY FEATURES
•
SHAFT TYPE: ROUND SINGLE ACTUATOR
•
SHAFT DIAMETER: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN
•
SWITCH CONTACT BASIC DESIGN: NONPILE-UP NONSYMMETRICAL
•
TERMINAL TYPE: TAB, SOLDER LUG
•
OVERALL DIAMETER: 2.656 INCHES MAXIMUM IN
•
CONTACT LOAD CURRENT RATING: 1.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
TECHNICAL CHARACTERISTICS
SHAFT TYPEROUND SINGLE ACTUATOR
SHAFT DIAMETER0.250 INCHES NOMINAL SINGLE ACTUATOR IN
SWITCH CONTACT BASIC DESIGNNONPILE-UP NONSYMMETRICAL
TERMINAL TYPETAB, SOLDER LUG
OVERALL DIAMETER2.656 INCHES MAXIMUM IN
CONTACT LOAD CURRENT RATING1.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
CONTACT LOAD CURRENT RATING1.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
CONTACT LOAD CURRENT RATING750.0 MILLIAMPERES RESISTIVE LOAD DC AT ALTITUDE
MOUNTING METHODTHREADED BUSHING SINGLE MOUNTING FACILITY
THREAD LENGTH0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
SUBSTITUTES & CROSS-REFERENCES 2
MS-20-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS-20-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS-20B-40118?
MS-20B-40118 is a SWITCH,ROTARY.
What parts can replace MS-20B-40118?
There are 2 known substitutes for MS-20B-40118: MS-20-6, MS-20-4. Substitute compatibility should be verified for your specific system.
What is the NSN for MS-20B-40118?
MS-20B-40118 is cataloged in the U.S. Government catalog under NSN 5930-00-566-9604. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.