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51YY23478 — SWITCH,ROTARY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

51YY23478: SWITCH,ROTARY.

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flat_height: 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM SINGLE ACTUATOR IN, shaft_length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, thread_length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN, overall_length: 1.225 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-221-8140, 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
51YY23478
NSN: 5930-01-221-8140
FSC: 5930 — Switches
CAGE: 81073 — GRAYHILL INC (USA)
SPECIFICATIONS
shaft_typeROUND, FLATTED SINGLE ACTUATOR
flat_height0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM SINGLE ACTUATOR IN
shaft_length0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
thread_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
overall_length1.225 INCHES NOMINAL IN
shaft_diameter0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SINGLE ACTUATOR IN
mounting_methodTHREADED BUSHING WITH PANEL SEAL SINGLE MOUNTING FACILITY
overall_diameter0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
style_designatorSNAP OR LINE
features_providedRFI SHIELDING
first_flat_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE ACTUATOR IN
NSN5930-01-221-8140
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,ROTARY TITLE COMPONENT PN 51YY23478 MFR SWITCH,ROTARY
KEY FEATURES
•
SHAFT TYPE: ROUND, FLATTED SINGLE ACTUATOR
•
SHAFT DIAMETER: 0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SINGLE ACTUATOR IN
•
SWITCH CONTACT BASIC DESIGN: CODED
•
TERMINAL TYPE: PRINTED CIRCUIT
•
OVERALL DIAMETER: 0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
•
FIRST FLAT LENGTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE ACTUATOR IN
•
DETENT ROTATIONAL TORQUE RANGE: +4.900 TO 9.100 INCH-OUNCES SINGLE ACTUATOR IN
•
CONTACT LOAD CURRENT RATING: 200.0 MILLIAMPERES RESISTIVE LOAD DC AT SEA LEVEL
TECHNICAL CHARACTERISTICS
SHAFT TYPEROUND, FLATTED SINGLE ACTUATOR
SHAFT DIAMETER0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SINGLE ACTUATOR IN
SWITCH CONTACT BASIC DESIGNCODED
TERMINAL TYPEPRINTED CIRCUIT
OVERALL DIAMETER0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
FIRST FLAT LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE ACTUATOR IN
DETENT ROTATIONAL TORQUE RANGE+4.900 TO 9.100 INCH-OUNCES SINGLE ACTUATOR IN
CONTACT LOAD CURRENT RATING200.0 MILLIAMPERES RESISTIVE LOAD DC AT SEA LEVEL
CONTACT LOAD CURRENT RATING150.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL
MOUNTING METHODTHREADED BUSHING WITH PANEL SEAL SINGLE MOUNTING FACILITY
OTHER ITEMS IN FSC 5930 — Switches
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5930-00-000-0117 5930-00-001-1407 5930-00-001-1890 5930-00-001-2571 5930-00-001-2575 5930-00-001-2580 5930-00-001-2608 5930-00-001-2609
SUBSTITUTES & CROSS-REFERENCES 1
51YY23443Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 51YY23478?
51YY23478 is a SWITCH,ROTARY.
What parts can replace 51YY23478?
There is 1 known substitute for 51YY23478: 51YY23443. Substitute compatibility should be verified for your specific system.
What is the NSN for 51YY23478?
51YY23478 is cataloged in the U.S. Government catalog under NSN 5930-01-221-8140. 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.