PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12-1902Switch,rotary

Janco Corporation Dba Janco Corp Div Mason Controls · NSN 5930-00-735-5421 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-735-5421 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-735-5421. Primary manufacturer part number: 12-1902.
Features
  • Switch,rotary — FSC 5930
  • First Flat Length: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN
  • Pole Quantity: 1 EACH SECTION REAR
  • Thread Class: 2A SINGLE MOUNTING FACILITY A
  • Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
  • Style Designator: TAP, CIRCULAR, BUSHING MOUNT
  • Contact Load Current Rating: 3.0 AMPERES RESISTIVE LOAD AND 2.0 AMPERES INDUCTIVE LOAD DC AT SEA LEVEL
  • Thread Series Designator: UNS SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-735-5421, 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 28 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-735-5421
Primary Part Number12-1902
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerJanco Corporation Dba Janco Corp Div Mason Controls
StatusACTIVE
First Flat Length0.250 INCHES NOMINAL SINGLE ACTUATOR IN
Pole Quantity1 EACH SECTION REAR
Thread Class2A SINGLE MOUNTING FACILITY A
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Contact Load Current Rating3.0 AMPERES RESISTIVE LOAD AND 2.0 AMPERES INDUCTIVE LOAD DC AT SEA LEVEL
Thread Series DesignatorUNS SINGLE MOUNTING FACILITY
Contact Voltage Rating in Volts28.0 DC AT SEA LEVEL
Hazardous Locations/environmental ProtectionDUSTPROOF
Operating Temp Range-55.0 TO 85.0 CELSIUS DEGC
Switch Actuator Indexing Position Quantity18 SINGLE ACTUATOR
Overall Diameter2.000 INCHES MAXIMUM IN
Contact Switching ActionBREAKS BEFORE MAKES EACH SECTION REAR
Throw Quantity18 EACH SECTION REAR
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Flat Height0.210 INCHES NOMINAL SINGLE ACTUATOR IN
Individual Section Quantity6
Contact Voltage Rating in Volts115.0 AC AT SEA LEVEL
Switch Actuator Positioning Increment20.0 DEGREES SINGLE ACTUATOR
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
Thread Length0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Terminal TypeTAB, SOLDER LUG
Nominal Thread Size0.469 INCHES SINGLE MOUNTING FACILITY IN
Shaft Length0.750 INCHES NOMINAL SINGLE ACTUATOR IN
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-012-19021177A INTERCHANGEABLE
Nut,plain,hexagon
John Deer Consumer Products Inc
5307-00-741-01767410176 INTERCHANGEABLE
Stud,plain
U S Army Tank Automotive Command Amsta-Im-Mm
5310-00-768-0319 INTERCHANGEABLE
Nut,plain,hexagon
5985-01-254-262312-190-2P4 INTERCHANGEABLE
Antenna
Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity
6515-01-417-9071121902 INTERCHANGEABLE
Airway,oral
Teleflex Medical Incorporated Dba Teleflex Medical Inc
5962-01-578-07701219-03 INTERCHANGEABLE
Microcircuit,digital
Tlsi Inc. Dba Tlsi Inc.
4730-01-654-7056SAE J2494-1 6-4 6304A2B INTERCHANGEABLE
Tee,pipe to Tube
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
900027-170 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
12-1902 PRIMARY Janco Corporation Dba Janco Corp Div Mason Controls (USA)
Related Parts
5310-00-012-1902INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1177A
5307-00-741-0176INTERCHANGEABLE
STUD,PLAIN
7410176
5310-00-768-0319INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5985-01-254-2623INTERCHANGEABLE
ANTENNA
12-190-2P4
6515-01-417-9071INTERCHANGEABLE
AIRWAY,ORAL
121902
5962-01-578-0770INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
1219-03
4730-01-654-7056INTERCHANGEABLE
TEE,PIPE TO TUBE
SAE J2494-1 6-4 6304A2B

Frequently Asked Questions

What is NSN 5930-00-735-5421?

NSN 5930-00-735-5421 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 5930-00-735-5421?

NSN 5930-00-735-5421 has 2 cross-referenced part numbers: 900027-170 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 12-1902 (Janco Corporation Dba Janco Corp Div Mason Controls).

What NSN replaces 5930-00-735-5421?

There are 7 known substitutes for 5930-00-735-5421: 5310-00-012-1902, 5307-00-741-0176, 5310-00-768-0319 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12-1902?

Key specifications for 12-1902: First Flat Length: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN; Pole Quantity: 1 EACH SECTION REAR; Thread Class: 2A SINGLE MOUNTING FACILITY A; Overall Length: 4.150 INCHES NOMINAL IN. 29 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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