PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49W9Resistor,variable,wire Wound,non

Clarostat Sensors and Controls · NSN 5905-00-549-2771 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-549-2771 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-549-2771. Primary manufacturer part number: 49W9.
Features
  • Resistor,variable,wire Wound,non — FSC 5905
  • Screw Thread Diameter: 0.250 INCHES NOMINAL IN
  • Maximum Stop Torque: 80.00 INCH-OUNCES IN
  • Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION
  • Mounting Method: LOCKING BUSHING
  • Electrical Resistance Per Section: 250.000 OHMS SINGLE SECTION
  • Terminal Type and Quantity: 3 TAB, SOLDER LUG
  • Terminal Location: RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
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 5905-00-549-2771, 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 Clarostat Sensors and Controls. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN5905-00-549-2771
Primary Part Number49W9
Item NameResistor,variable,wire Wound,non
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerClarostat Sensors and Controls
StatusACTIVE
Screw Thread Diameter0.250 INCHES NOMINAL IN
Maximum Stop Torque80.00 INCH-OUNCES IN
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power125.0 SINGLE SECTION
Mounting MethodLOCKING BUSHING
Electrical Resistance Per Section250.000 OHMS SINGLE SECTION
Terminal Type and Quantity3 TAB, SOLDER LUG
Terminal LocationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Power Dissipation Rating Per Section in Watts1.0 FREE AIR SINGLE SECTION
Resistance Tolerance Per Section in Percent-5.0 TO 5.0 SINGLE SECTION
Ambient Temp in Deg Celsius Per Section at Full Rated Power40.0 SINGLE SECTION
Nonturn Device LocationAT 9 OCLOCK
Screw Thread Series DesignatorUNEF
Actuator TypeSINGLE SHAFT
Screw Thread Quantity Per Inch32.0
Shaft StyleROUND, SLOTTED
Reliability IndicatorNOT ESTABLISHED
Shaft Length0.438 INCHES NOMINAL IN
Section Quantity1
Mounting Bushing Length0.375 INCHES NOMINAL IN
Maximum Starting Torque6.00 INCH-OUNCES IN
Nonturn Device Radius0.244 INCHES NOMINAL IN
Body Length0.438 INCHES NOMINAL IN
Maximum Running Torque0.30 INCH-OUNCES IN
Body Diameter0.750 INCHES NOMINAL IN
Shaft Diameter0.125 INCHES NOMINAL IN
Body StyleCYLINDRICAL BUSHING MOUNTED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-204-6971 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5905-00-204-6972 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5905-00-549-3458 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Cross-Reference Index
Part NumberManufacturer
49W9 Clarostat Sensors and Controls (USA)
Related Parts
5905-00-204-6971INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5905-00-204-6972INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5905-00-549-3458INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON

Frequently Asked Questions

What is NSN 5905-00-549-2771?

NSN 5905-00-549-2771 is a Resistor,variable,wire Wound,non, manufactured by Clarostat Sensors and Controls, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-549-2771?

NSN 5905-00-549-2771 has 1 cross-referenced part number: 49W9 (Clarostat Sensors and Controls).

What NSN replaces 5905-00-549-2771?

There are 3 known substitutes for 5905-00-549-2771: 5905-00-204-6971, 5905-00-204-6972, 5905-00-549-3458. Verify interchangeability with system specifications before substitution.

What are the specifications of 49W9?

Key specifications for 49W9: Screw Thread Diameter: 0.250 INCHES NOMINAL IN; Maximum Stop Torque: 80.00 INCH-OUNCES IN; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION; Mounting Method: LOCKING BUSHING. 26 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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