PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4209Switch,rotary

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 5930-00-188-4023 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-188-4023 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-188-4023. Primary manufacturer part number: 4209.
Features
  • Switch,rotary — FSC 5930
  • Contact Voltage Rating in Volts: 250.0 AC AT SEA LEVEL
  • Thread Series Designator: UNEF SINGLE MOUNTING FACILITY
  • Shaft Length: 0.437 INCHES NOMINAL SINGLE ACTUATOR IN
  • Individual Section Quantity: 1
  • Style Designator: CIRCULAR WAFER, BUSHING MOUNT
  • Contact Load Current Rating: 25.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
  • Switch Actuator Positioning Increment: 90.0 DEGREES SINGLE ACTUATOR
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-188-4023, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 26 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-188-4023
Primary Part Number4209
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Contact Voltage Rating in Volts250.0 AC AT SEA LEVEL
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
Shaft Length0.437 INCHES NOMINAL SINGLE ACTUATOR IN
Individual Section Quantity1
Style DesignatorCIRCULAR WAFER, BUSHING MOUNT
Contact Load Current Rating25.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL
Switch Actuator Positioning Increment90.0 DEGREES SINGLE ACTUATOR
Shaft TypeROUND, SLOTTED, FLATTED SINGLE ACTUATOR
Thread Length0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal TypeQUICK DISCONNECT, MALE
Cam Actuated Switch Contact Arrangement1 TWO CIRCUIT, DOUBLE BREAK/DOUBLE MAKE, BOTH POSITIONS MAINTAINED SINGLE SWITCH SINGLE SECTION REAR
Switch Contact Basic DesignNONPILE-UP NONSYMMETRICAL
Nominal Thread Size0.375 INCHES SINGLE MOUNTING FACILITY IN
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Features ProvidedCAM ACTUATED
Flat Height0.198 INCHES MINIMUM AND 0.201 INCHES MAXIMUM SINGLE ACTUATOR IN
Hazardous Locations/environmental ProtectionDUSTPROOF
Thread Class2A SINGLE MOUNTING FACILITY A
Contact Switching ActionBREAKS BEFORE MAKES SINGLE SECTION REAR
Nonturn Device TypePIN AT 3:00 OCLOCK
First Flat Length0.375 INCHES NOMINAL SINGLE ACTUATOR IN
Shaft Diameter0.248 INCHES MINIMUM AND 0.251 INCHES MAXIMUM SINGLE ACTUATOR IN
Shaft Flat/slot Angular Location180.0 DEGREES FROM NONTURN DEVICE SINGLE ACTUATOR
Nonturn Device Radius0.468 INCHES MINIMUM AND 0.475 INCHES MAXIMUM AT 3:00 OCLOCK IN
Switch Actuator Indexing Position Quantity3 SINGLE ACTUATOR
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5310-00-021-8197NF34T96 INTERCHANGEABLE
Nut,plain,hexagon
Dayton-Walther Corp
5310-00-185-6464 INTERCHANGEABLE
Nut,plain,round
6110-00-359-035627A14-6 INTERCHANGEABLE
Controller,electric Brake
Trailmobile Inc Sub of the Pullman Co
3110-00-554-3927 INTERCHANGEABLE
Bearing,ball,annular
5940-00-577-00374029 INTERCHANGEABLE
Terminal,lug
Brainin-Advance Industries, Llc
5340-01-133-97084209 INTERCHANGEABLE
Standoff,threaded,spacing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6532-01-149-78364212 INTERCHANGEABLE
Cap,operating,surgical
Johnson and Johnson Medical Inc Sub of Johnson and Johnson
6510-01-344-40474209 INTERCHANGEABLE
Adhesive Tape,surgical
Smith & Nephew Inc. Dba Smith and Nephew Wound and Mgt Div Wound Management
5305-01-666-47044209 INTERCHANGEABLE
Screw,machine
Bernard Welding
Cross-Reference Index
Part NumberManufacturer
4209 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
2804H169 Ark-Les Corp (USA)
Related Parts
5310-00-021-8197INTERCHANGEABLE
NUT,PLAIN,HEXAGON
NF34T96
5310-00-185-6464INTERCHANGEABLE
NUT,PLAIN,ROUND
6110-00-359-0356INTERCHANGEABLE
CONTROLLER,ELECTRIC BRAKE
27A14-6
3110-00-554-3927INTERCHANGEABLE
BEARING,BALL,ANNULAR
5940-00-577-0037INTERCHANGEABLE
TERMINAL,LUG
4029
5340-01-133-9708INTERCHANGEABLE
STANDOFF,THREADED,SPACING
4209
6532-01-149-7836INTERCHANGEABLE
CAP,OPERATING,SURGICAL
4212
6510-01-344-4047INTERCHANGEABLE
ADHESIVE TAPE,SURGICAL
4209
5305-01-666-4704INTERCHANGEABLE
SCREW,MACHINE
4209

Frequently Asked Questions

What is NSN 5930-00-188-4023?

NSN 5930-00-188-4023 is a Switch,rotary, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-188-4023?

NSN 5930-00-188-4023 has 2 cross-referenced part numbers: 4209 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 2804H169 (Ark-Les Corp).

What NSN replaces 5930-00-188-4023?

There are 9 known substitutes for 5930-00-188-4023: 5310-00-021-8197, 5310-00-185-6464, 6110-00-359-0356 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4209?

Key specifications for 4209: Contact Voltage Rating in Volts: 250.0 AC AT SEA LEVEL; Thread Series Designator: UNEF SINGLE MOUNTING FACILITY; Shaft Length: 0.437 INCHES NOMINAL SINGLE ACTUATOR IN; Individual Section Quantity: 1. 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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