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Technical Data Sheet
PartsTable / MRO / 1SR2E4
1SR2E4 ✓ 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

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND SINGLE ACTUATOR, shaft_length: 0.234 INCHES NOMINAL SINGLE ACTUATOR IN, terminal_type: SCREW, mounting_method: BASE SINGLE MOUNTING FACILITY, first_flat_length: 0.217 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE ACTUATOR IN, contact_switching_action: BREAKS BEFORE MAKES EACH SECTION FRONT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-7151, 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→ 1SR2E4
NSN: 5930-00-259-7151
FSC: 5930
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
shaft_typeROUND SINGLE ACTUATOR
shaft_length0.234 INCHES NOMINAL SINGLE ACTUATOR IN
terminal_typeSCREW
mounting_methodBASE SINGLE MOUNTING FACILITY
first_flat_length0.217 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE ACTUATOR IN
contact_switching_actionBREAKS BEFORE MAKES EACH SECTION FRONT
mounting_facility_patternTWO POSITION IN-LINE SINGLE MOUNTING FACILITY
individual_section_quantity4
specification/standard_data81349-MIL-S-15291/3 GOVERNMENT SPECIFICATION
switch_contact_basic_designNONPILE-UP NONSYMMETRICAL
unthreaded_mounting_hole_diameter0.203 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
switch_actuator_positioning_increment90.0 DEGREES SINGLE ACTUATOR
NSN5930-00-259-7151
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,ROTARY TITLE COMPONENT PN 1SR2E4 MFR SWITCH,ROTARY
KEY FEATURES
•
SHAFT LENGTH: 0.234 INCHES NOMINAL SINGLE ACTUATOR IN
•
FIRST FLAT LENGTH: 0.217 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE ACTUATOR IN
•
CONTACT SWITCHING ACTION: BREAKS BEFORE MAKES EACH SECTION FRONT
•
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.).
•
SWITCH ACTUATOR POSITIONING INCREMENT: 90.0 DEGREES SINGLE ACTUATOR
•
MOUNTING FACILITY PATTERN: TWO POSITION IN-LINE SINGLE MOUNTING FACILITY
•
SHAFT TYPE: ROUND SINGLE ACTUATOR
•
LONGEST HORIZONTAL DISTANCE BETWEEN MOUNTING CENTERS: 2.094 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
TECHNICAL CHARACTERISTICS (FLIS)
SHAFT LENGTH0.234 INCHES NOMINAL SINGLE ACTUATOR IN
FIRST FLAT LENGTH0.217 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE ACTUATOR IN
CONTACT SWITCHING ACTIONBREAKS BEFORE MAKES EACH SECTION FRONT
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.).
SWITCH ACTUATOR POSITIONING INCREMENT90.0 DEGREES SINGLE ACTUATOR
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE SINGLE MOUNTING FACILITY
SHAFT TYPEROUND SINGLE ACTUATOR
LONGEST HORIZONTAL DISTANCE BETWEEN MOUNTING CENTERS2.094 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
MOUNTING METHODBASE SINGLE MOUNTING FACILITY
SWITCH CONTACT BASIC DESIGNNONPILE-UP NONSYMMETRICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
MIL-S-15291/3Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-15291/3Interchangeable
interchangeable cross-reference
interchangeable
M15291/3-001Interchangeable
interchangeable cross-reference
interchangeable
9000S6202-74085REV1TYPE1SR2A4Interchangeable
interchangeable cross-reference
interchangeable
C10301AInterchangeable
interchangeable cross-reference
interchangeable
9000S6202-74085TY1SR2B4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1SR2E4?
1SR2E4 is a SWITCH,ROTARY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1SR2E4?
There are 22 known substitutes for 1SR2E4: MIL-S-15291/3, MIL-DTL-15291/3, M15291/3-001 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1SR2E4?
1SR2E4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-7151. 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