PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILR19-3Resistor,variable,wire Wound,non

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5905-00-840-1044 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-840-1044 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-840-1044. Primary manufacturer part number: MILR19-3.
Features
  • Resistor,variable,wire Wound,non — FSC 5905
  • Nonturn Device Location: AT 9 OCLOCK
  • Rotary Actuator Travel in Angular Deg: 290.0 MINIMUM AND 305.0 MAXIMUM
  • Resistance Tolerance Per Section in Percent: -10.0 TO 10.0 SINGLE SECTION
  • Ambient Temp in Deg Celsius Per Section at Full Rated Power: 40.0 SINGLE SECTION
  • Actuator Travel Control Feature: STOPS
  • Terminal Location: RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
  • Specification/standard Data: 81349-MIL-R-19/2 GOVERNMENT SPECIFICATION
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Circuit regulation and filtering
  • Signal conditioning
General Description

The Resistor,variable,wire Wound,non, cataloged under National Stock Number 5905-00-840-1044, is classified within Federal Supply Class 5905 (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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-840-1044
Primary Part NumberMILR19-3
Item NameResistor,variable,wire Wound,non
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nonturn Device LocationAT 9 OCLOCK
Rotary Actuator Travel in Angular Deg290.0 MINIMUM AND 305.0 MAXIMUM
Resistance Tolerance Per Section in Percent-10.0 TO 10.0 SINGLE SECTION
Ambient Temp in Deg Celsius Per Section at Full Rated Power40.0 SINGLE SECTION
Actuator Travel Control FeatureSTOPS
Terminal LocationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Specification/standard Data81349-MIL-R-19/2 GOVERNMENT SPECIFICATION
Power Dissipation Rating Per Section in Watts2.0 FREE AIR SINGLE SECTION
Test Data Document81349-MIL-R-19 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.).
Terminal Type and Quantity3 TAB, SOLDER LUG
Departure From Cited DesignatorQUALITY CONTROLLED FOR POLARIS
Shaft Diameter0.250 INCHES NOMINAL IN
Body StyleCYLINDRICAL BUSHING MOUNTED
Body Diameter1.220 INCHES NOMINAL IN
Section Quantity1
Mounting Bushing Length0.500 INCHES NOMINAL IN
Screw Thread Diameter0.375 INCHES NOMINAL IN
Shaft Length0.625 INCHES NOMINAL IN
Shaft StyleROUND, SLOTTED
Actuator TypeSINGLE SHAFT
Mounting MethodLOCKING BUSHING
Reliability IndicatorNOT ESTABLISHED
Nonturn Device Radius0.531 INCHES NOMINAL IN
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power105.0 SINGLE SECTION
Effective Electrical Rotation in Deg Angular Rotation290.0 MINIMUM AND 305.0 MAXIMUM
Electrical Resistance Per Section10.0 KILOHMS SINGLE SECTION
Screw Thread Series DesignatorUNEF
Screw Thread Quantity Per Inch32.0
Body Length0.620 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-577-3656 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5905-00-789-7033RA20LASB103A INTERCHANGEABLE
Resistor,variable,wire Wound,non
Clarostat Sensors and Controls
5905-00-806-4201 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Cross-Reference Index
Part NumberManufacturer
MILR19-3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RA20LASB103A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5905-00-577-3656INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5905-00-789-7033INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
RA20LASB103A
5905-00-806-4201INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON

Frequently Asked Questions

What is NSN 5905-00-840-1044?

NSN 5905-00-840-1044 is a Resistor,variable,wire Wound,non, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-840-1044?

NSN 5905-00-840-1044 has 2 cross-referenced part numbers: MILR19-3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), RA20LASB103A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5905-00-840-1044?

There are 3 known substitutes for 5905-00-840-1044: 5905-00-577-3656, 5905-00-789-7033, 5905-00-806-4201. Verify interchangeability with system specifications before substitution.

What are the specifications of MILR19-3?

Key specifications for MILR19-3: Nonturn Device Location: AT 9 OCLOCK; Rotary Actuator Travel in Angular Deg: 290.0 MINIMUM AND 305.0 MAXIMUM; Resistance Tolerance Per Section in Percent: -10.0 TO 10.0 SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Full Rated Power: 40.0 SINGLE SECTION. 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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