PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-S-21604/3Switch,rotary

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5930-00-581-3784 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-581-3784 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-581-3784. Primary manufacturer part number: MIL-S-21604/3.
Features
  • Switch,rotary — FSC 5930
  • Contact Voltage Rating in Volts: 125.0 AC AT SEA LEVEL
  • Terminal Type: TAB W/SCREW
  • Thread Series Designator: UNS SINGLE MOUNTING FACILITY
  • Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
  • Throw Quantity: 7 EACH SECTION REAR
  • Shaft Type: ROUND SINGLE ACTUATOR
  • Switch Actuator Positioning Increment: 45.0 DEGREES SINGLE ACTUATOR
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-581-3784, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-581-3784
Primary Part NumberMIL-S-21604/3
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Contact Voltage Rating in Volts125.0 AC AT SEA LEVEL
Terminal TypeTAB W/SCREW
Thread Series DesignatorUNS SINGLE MOUNTING FACILITY
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
Throw Quantity7 EACH SECTION REAR
Shaft TypeROUND SINGLE ACTUATOR
Switch Actuator Positioning Increment45.0 DEGREES SINGLE ACTUATOR
Thread Length0.470 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Contact Switching ActionBREAKS BEFORE MAKES EACH SECTION REAR
Overall Diameter2.000 INCHES NOMINAL IN
Switch Actuator Stop Device TypeADJUSTABLE STOP SINGLE ACTUATOR
Shaft Length1.100 INCHES NOMINAL SINGLE ACTUATOR IN
Precious Material and LocationROTOR AND STATOR SURFACES SILVER
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
Switch Actuator Indexing Position Quantity8 SINGLE ACTUATOR
Pole Quantity1 EACH SECTION REAR
Hazardous Locations/environmental ProtectionDUSTPROOF
Specification/standard Data81349-MIL-S-21604/3 GOVERNMENT SPECIFICATION
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Test Data Document81349-MIL-S-21604 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.).
Precious MaterialSILVER
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Nominal Thread Size0.469 INCHES SINGLE MOUNTING FACILITY IN
Features ProvidedACTUATOR KNOB
Thread Class2A SINGLE MOUNTING FACILITY A
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Individual Section Quantity3
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5930-00-065-2083 INTERCHANGEABLE
Switch,rotary
5930-00-432-7641 INTERCHANGEABLE
Switch,rotary
5930-00-581-3786 INTERCHANGEABLE
Switch,rotary
5930-00-581-3788 INTERCHANGEABLE
Switch,rotary
5930-00-752-2963 INTERCHANGEABLE
Switch,rotary
5930-01-223-1545 INTERCHANGEABLE
Switch,rotary
5930-01-223-1546 INTERCHANGEABLE
Switch,rotary
Cross-Reference Index
Part NumberManufacturer
MIL-S-21604/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILS21604 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2JL3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9000-56202-74422 2JL3 Naval Sea Systems Command (USA)
9000S6202-74422UNIT4 Naval Ship Systems Command (USA)
S2JL3 Naval Ship Systems Command (USA)
Related Parts
5930-00-065-2083INTERCHANGEABLE
SWITCH,ROTARY
5930-00-432-7641INTERCHANGEABLE
SWITCH,ROTARY
5930-00-581-3786INTERCHANGEABLE
SWITCH,ROTARY
5930-00-581-3788INTERCHANGEABLE
SWITCH,ROTARY
5930-00-752-2963INTERCHANGEABLE
SWITCH,ROTARY
5930-01-223-1545INTERCHANGEABLE
SWITCH,ROTARY
5930-01-223-1546INTERCHANGEABLE
SWITCH,ROTARY

Frequently Asked Questions

What is NSN 5930-00-581-3784?

NSN 5930-00-581-3784 is a Switch,rotary, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-581-3784?

NSN 5930-00-581-3784 has 6 cross-referenced part numbers: MIL-S-21604/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILS21604 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 2JL3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 9000-56202-74422 2JL3 (Naval Sea Systems Command), 9000S6202-74422UNIT4 (Naval Ship Systems Command) and 1 more.

What NSN replaces 5930-00-581-3784?

There are 7 known substitutes for 5930-00-581-3784: 5930-00-065-2083, 5930-00-432-7641, 5930-00-581-3786 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-S-21604/3?

Key specifications for MIL-S-21604/3: Contact Voltage Rating in Volts: 125.0 AC AT SEA LEVEL; Terminal Type: TAB W/SCREW; Thread Series Designator: UNS SINGLE MOUNTING FACILITY; Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-581-3784 still in active supply?

NSN 5930-00-581-3784 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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