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SPEC 9521 ✓ Verified by PartsTable
— · COMPONENT
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

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flat_height: 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM SINGLE ACTUATOR IN, shaft_length: 0.500 INCHES NOMINAL SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, pole_quantity: 1 SINGLE SECTION REAR, terminal_type: TAB, SOLDER LUG. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-981-3270, 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
SPEC 9521
NSN: 5930-00-981-3270
FSC: 5930
CAGE: 28057 — SHALLCO, INC (USA)
SPECIFICATIONS
shaft_typeROUND, FLATTED SINGLE ACTUATOR
flat_height0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM SINGLE ACTUATOR IN
shaft_length0.500 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
pole_quantity1 SINGLE SECTION REAR
terminal_typeTAB, SOLDER LUG
thread_length0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
overall_length1.437 INCHES NOMINAL IN
shaft_diameter0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM SINGLE ACTUATOR IN
throw_quantity3 SINGLE SECTION REAR
mounting_methodTHREADED BUSHING SINGLE MOUNTING FACILITY
overall_diameter0.500 INCHES NOMINAL IN
NSN5930-00-981-3270
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,ROTARY TITLE COMPONENT PN SPEC 9521 MFR SWITCH,ROTARY
KEY FEATURES
•
FLAT HEIGHT: 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM SINGLE ACTUATOR IN
•
SHAFT DIAMETER: 0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM SINGLE ACTUATOR IN
•
INDIVIDUAL SECTION QUANTITY: 1
•
NOMINAL THREAD SIZE: 0.250 INCHES SINGLE MOUNTING FACILITY IN
•
FIRST FLAT LENGTH: 0.375 INCHES NOMINAL SINGLE ACTUATOR IN
•
OVERALL DIAMETER: 0.500 INCHES NOMINAL IN
•
OPERATING TEMP RANGE: -55.0 TO 125.0 CELSIUS DEGC
TECHNICAL CHARACTERISTICS (FLIS)
FLAT HEIGHT0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM SINGLE ACTUATOR IN
SHAFT DIAMETER0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM SINGLE ACTUATOR IN
OVERALL LENGTH1.437 INCHES NOMINAL IN
INDIVIDUAL SECTION QUANTITY1
NOMINAL THREAD SIZE0.250 INCHES SINGLE MOUNTING FACILITY IN
FIRST FLAT LENGTH0.375 INCHES NOMINAL SINGLE ACTUATOR IN
OVERALL DIAMETER0.500 INCHES NOMINAL IN
OPERATING TEMP RANGE-55.0 TO 125.0 CELSIUS DEGC
THROW QUANTITY3 SINGLE SECTION REAR
SHAFT TYPEROUND, FLATTED SINGLE ACTUATOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
480-9511Interchangeable
interchangeable cross-reference
interchangeable
A540Interchangeable
interchangeable cross-reference
interchangeable
9521Interchangeable
interchangeable cross-reference
interchangeable
J9521Interchangeable
interchangeable cross-reference
interchangeable
B107.46 TY4Interchangeable
interchangeable cross-reference
interchangeable
B107.410Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SPEC 9521?
SPEC 9521 is a SWITCH,ROTARY.
What parts can replace SPEC 9521?
There are 21 known substitutes for SPEC 9521: 480-9511, A540, 9521 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SPEC 9521?
SPEC 9521 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-981-3270. 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