PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37-1923-9Switch,rotary

Janco Corporation Dba Janco Corp Div Mason Controls · NSN 5930-00-789-6122 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-789-6122 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-789-6122. Primary manufacturer part number: 37-1923-9.
Features
  • Switch,rotary — FSC 5930
  • Throw Quantity: 10 EACH SECTION REAR
  • Mounting Method: THREADED BUSHING FIRST MOUNTING FACILITY
  • Thread Class: 2A SECOND MOUNTING FACILITY A
  • Shaft Length: 0.470 INCHES NOMINAL SINGLE ACTUATOR IN
  • Nominal Thread Size: 0.375 INCHES FIRST MOUNTING FACILITY IN
  • Pole Quantity: 1 EACH SECTION FRONT
  • Longest Horizontal Distance Between Mounting Centers: 0.888 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-789-6122, 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 Janco Corporation Dba Janco Corp Div Mason Controls. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-789-6122
Primary Part Number37-1923-9
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerJanco Corporation Dba Janco Corp Div Mason Controls
StatusACTIVE
Throw Quantity10 EACH SECTION REAR
Mounting MethodTHREADED BUSHING FIRST MOUNTING FACILITY
Thread Class2A SECOND MOUNTING FACILITY A
Shaft Length0.470 INCHES NOMINAL SINGLE ACTUATOR IN
Nominal Thread Size0.375 INCHES FIRST MOUNTING FACILITY IN
Pole Quantity1 EACH SECTION FRONT
Longest Horizontal Distance Between Mounting Centers0.888 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Thread Class2A FIRST MOUNTING FACILITY A
Hazardous Locations/environmental ProtectionDUSTPROOF AND MOISTURE RESISTANT
Thread Length0.410 INCHES NOMINAL FIRST MOUNTING FACILITY IN
Flat Height0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM SINGLE ACTUATOR IN
Nominal Thread Size0.073 INCHES SECOND MOUNTING FACILITY IN
Shaft Diameter0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE ACTUATOR IN
Thread Length0.500 INCHES NOMINAL SECOND MOUNTING FACILITY IN
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Contact Load Current Rating2.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
Rotor Through Connection Quantity1 EACH SECTION
Mounting Facility PatternTWO POSITION IN-LINE SECOND MOUNTING FACILITY
Thread Series DesignatorUNEF FIRST MOUNTING FACILITY
Shaft Flat/slot Angular Location195.0 DEGREES FROM NONTURN DEVICE SINGLE ACTUATOR
Switch Actuator Indexing Position Quantity10 SINGLE ACTUATOR
Individual Section Quantity10
Thread Series DesignatorUNF SECOND MOUNTING FACILITY
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Switch Actuator Positioning Increment30.0 DEGREES SINGLE ACTUATOR
Nonturn Device TypeSLOTTED BUSHING AT 12:00 OCLOCK
Mounting MethodTHREADED STUD(S) SECOND MOUNTING FACILITY
Contact Voltage Rating in Volts28.0 DC AT SEA LEVEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3020-01-026-3215 INTERCHANGEABLE
Chain Assembly,rotary
Cross-Reference Index
Part NumberManufacturer
935131-9 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
37-1923-9 PRIMARY Janco Corporation Dba Janco Corp Div Mason Controls (USA)
Related Parts
3020-01-026-3215INTERCHANGEABLE
CHAIN ASSEMBLY,ROTARY

Frequently Asked Questions

What is NSN 5930-00-789-6122?

NSN 5930-00-789-6122 is a Switch,rotary, manufactured by Janco Corporation Dba Janco Corp Div Mason Controls, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-789-6122?

NSN 5930-00-789-6122 has 2 cross-referenced part numbers: 935131-9 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 37-1923-9 (Janco Corporation Dba Janco Corp Div Mason Controls).

What NSN replaces 5930-00-789-6122?

There is 1 known substitute for 5930-00-789-6122: 3020-01-026-3215. Verify interchangeability with system specifications before substitution.

What are the specifications of 37-1923-9?

Key specifications for 37-1923-9: Throw Quantity: 10 EACH SECTION REAR; Overall Length: 5.470 INCHES NOMINAL IN; Mounting Method: THREADED BUSHING FIRST MOUNTING FACILITY; Thread Class: 2A SECOND MOUNTING FACILITY A. 30 total characteristics are documented in the Federal Logistics Information System.

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