PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42AResistor,variable,wire Wound,pre

Clarostat Sensors and Controls · NSN 5905-00-501-6805 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-501-6805 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-501-6805. Primary manufacturer part number: 42A.
Features
  • Resistor,variable,wire Wound,pre — FSC 5905
  • Resistance Tolerance Per Section in Percent: -10.0 TO 10.0 SINGLE SECTION
  • Maximum Starting Torque: 0.50 INCH-OUNCES IN
  • Screw Thread Quantity Per Inch: 32.0
  • Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 120.0 SINGLE SECTION
  • Rotary Actuator Travel in Angular Deg: 312.0 NOMINAL
  • Function Conformity Tolerance Per Section: -1.00 TO 1.00 SINGLE SECTION
  • Tap Location From Ccw Terminal Per Section in Ohms: 25000.0 SINGLE SECTION
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Circuit regulation and filtering
  • Signal conditioning
General Description

The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-501-6805, 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 30 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-501-6805
Primary Part Number42A
Item NameResistor,variable,wire Wound,pre
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerClarostat Sensors and Controls
StatusACTIVE
Resistance Tolerance Per Section in Percent-10.0 TO 10.0 SINGLE SECTION
Maximum Starting Torque0.50 INCH-OUNCES IN
Screw Thread Quantity Per Inch32.0
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power120.0 SINGLE SECTION
Rotary Actuator Travel in Angular Deg312.0 NOMINAL
Function Conformity Tolerance Per Section-1.00 TO 1.00 SINGLE SECTION
Tap Location From Ccw Terminal Per Section in Ohms25000.0 SINGLE SECTION
Ambient Temp in Deg Celsius Per Section at Full Rated Power70.0 SINGLE SECTION
Actuator Travel Control FeatureSTOPS
Mounting MethodSTANDARD BUSHING
Fixed Tap Quantity Per Section1 SINGLE SECTION
Function Conformity Per SectionSINGLE SECTION INDEPENDENT LINEARITY
Tap Location Tolerance Per Section-10.0 TO 10.0 OHMS SINGLE SECTION
Function Characteristic Per SectionSINGLE SECTION LINEAR
Terminal LocationRADIALLY POSITIONED OVER MORE THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Power Dissipation Rating Per Section in Watts3.0 FREE AIR SINGLE SECTION
Terminal Type and Quantity4 TAB, SOLDER LUG
Effective Electrical Rotation in Deg Angular Rotation312.0 NOMINAL
Body Length0.562 INCHES NOMINAL IN
Mounting Bushing Length0.375 INCHES NOMINAL IN
Screw Thread Diameter0.375 INCHES NOMINAL IN
Nonturn Device LocationAT 9 OCLOCK
Nonturn Device Radius0.531 INCHES NOMINAL IN
Body StyleCYLINDRICAL BUSHING MOUNTED
Reliability IndicatorNOT ESTABLISHED
Shaft StyleROUND
Screw Thread Series DesignatorUNEF
Actuator TypeSINGLE SHAFT
Body Diameter1.062 INCHES NOMINAL IN
Section Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2920-00-155-8040J6 INTERCHANGEABLE
Spark Plug
Champion Aerospace Llc
5310-00-269-62751832YA INTERCHANGEABLE
Nut,plain,slotted,hexagon
Navistar Intl Corp Truck Br Ohio Plant
3950-00-318-30151720-20PC76 INTERCHANGEABLE
Lining,friction
Lake Shore Systems, Inc.
3030-00-529-0394 INTERCHANGEABLE
Belt,v
5935-00-839-73779157298 INTERCHANGEABLE
Jack,telephone
Us Army Aviation and Missile Command
8340-00-951-0989 INTERCHANGEABLE
Segment,tent Frame Arch
5110-01-166-651232870 INTERCHANGEABLE
Cutter,pipe
Ridge Tool Company
7710-01-610-858442A INTERCHANGEABLE
Trombone,tenor
Conn-Selmer, Inc.
Cross-Reference Index
Part NumberManufacturer
42A Clarostat Sensors and Controls (USA)
Related Parts
2920-00-155-8040INTERCHANGEABLE
SPARK PLUG
J6
5310-00-269-6275INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
1832YA
3950-00-318-3015INTERCHANGEABLE
LINING,FRICTION
1720-20PC76
3030-00-529-0394INTERCHANGEABLE
BELT,V
5935-00-839-7377INTERCHANGEABLE
JACK,TELEPHONE
9157298
8340-00-951-0989INTERCHANGEABLE
SEGMENT,TENT FRAME ARCH
5110-01-166-6512INTERCHANGEABLE
CUTTER,PIPE
32870
7710-01-610-8584INTERCHANGEABLE
TROMBONE,TENOR
42A

Frequently Asked Questions

What is NSN 5905-00-501-6805?

NSN 5905-00-501-6805 is a Resistor,variable,wire Wound,pre, manufactured by Clarostat Sensors and Controls, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-501-6805?

NSN 5905-00-501-6805 has 1 cross-referenced part number: 42A (Clarostat Sensors and Controls).

What NSN replaces 5905-00-501-6805?

There are 8 known substitutes for 5905-00-501-6805: 2920-00-155-8040, 5310-00-269-6275, 3950-00-318-3015 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42A?

Key specifications for 42A: Resistance Tolerance Per Section in Percent: -10.0 TO 10.0 SINGLE SECTION; Maximum Starting Torque: 0.50 INCH-OUNCES IN; Screw Thread Quantity Per Inch: 32.0; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 120.0 SINGLE SECTION. 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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