PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R31-2Resistor,variable,wire Wound,pre

Cae Usa Inc. · NSN 5905-00-821-6437 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-821-6437 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-821-6437. Primary manufacturer part number: R31-2.
Features
  • Resistor,variable,wire Wound,pre — FSC 5905
  • Terminal Type and Quantity: 8 SOLDER STUD
  • Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 75.0 SINGLE SECTION
  • Mounting Method: CLAMP RING(S)
  • Actuator Type: SINGLE SHAFT
  • Resistance Tolerance Per Section in Percent: -5.0 TO 5.0 SINGLE SECTION
  • Reliability Indicator: NOT ESTABLISHED
  • Actuator Travel Control Feature: CONTINUOUS MOTION
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 5905-00-821-6437, 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 Cae Usa Inc.. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-821-6437
Primary Part NumberR31-2
Item NameResistor,variable,wire Wound,pre
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerCae Usa Inc.
StatusACTIVE
Terminal Type and Quantity8 SOLDER STUD
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power75.0 SINGLE SECTION
Mounting MethodCLAMP RING(S)
Actuator TypeSINGLE SHAFT
Resistance Tolerance Per Section in Percent-5.0 TO 5.0 SINGLE SECTION
Reliability IndicatorNOT ESTABLISHED
Actuator Travel Control FeatureCONTINUOUS MOTION
Shaft Length0.220 INCHES NOMINAL IN
Ambient Temp in Deg Celsius Per Section at Full Rated Power25.0 SINGLE SECTION
Function Conformity Per SectionSINGLE SECTION INDEPENDENT LINEARITY
Shaft Diameter0.250 INCHES NOMINAL IN
Features ProvidedNONMETALLIC SHAFT
Shaft StyleROUND
Maximum Running Torque0.35 INCH-OUNCES IN
Power Dissipation Rating Per Section in Watts4.0 FREE AIR SINGLE SECTION
Electrical Resistance Per Section20.0 KILOHMS SINGLE SECTION
Function Characteristic Per SectionSINGLE SECTION LINEAR
Maximum Starting Torque0.60 INCH-OUNCES IN
Fixed Tap Quantity Per Section4 SINGLE SECTION
Effective Electrical Rotation in Deg Angular Rotation360.0 NOMINAL
Rotary Actuator Travel in Angular Deg360.0 NOMINAL
Function Conformity Tolerance Per Section-0.25 TO 0.25 SINGLE SECTION
Section Quantity1
Tap Location Tolerance Per Section-2.0 TO 2.0 DEG ANGULAR ROTATION SINGLE SECTION
Overall Diameter2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-089-1223 INTERCHANGEABLE
Reactor
4320-00-214-0127R312 INTERCHANGEABLE
Pump Unit,centrifugal
Circor Naval Solutions Llc Dba Warren Pumps
5340-00-489-5185R31-1A INTERCHANGEABLE
Handle,door
Adams Rite Aerospace, Inc
6660-00-498-9689R312 INTERCHANGEABLE
Hammer,print
Simplex Time Recorder Llc
3010-00-713-46031522762 INTERCHANGEABLE
Clutch Assembly,friction
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5325-00-982-0177 INTERCHANGEABLE
Receptacle,turnlock Fastener
Cross-Reference Index
Part NumberManufacturer
RVBC2-32057-2 Bowmar/tic Inc Sub of Bowmar Instrument Corp (USA)
R31-2 PRIMARY Cae Usa Inc. (USA)
C450-203-5 Micro-Lectric Inc
R31-2 Raytheon Technical Services Company (USA)
Related Parts
5950-00-089-1223INTERCHANGEABLE
REACTOR
4320-00-214-0127INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
R312
5340-00-489-5185INTERCHANGEABLE
HANDLE,DOOR
R31-1A
6660-00-498-9689INTERCHANGEABLE
HAMMER,PRINT
R312
3010-00-713-4603INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
1522762
5325-00-982-0177INTERCHANGEABLE
RECEPTACLE,TURNLOCK FASTENER

Frequently Asked Questions

What is NSN 5905-00-821-6437?

NSN 5905-00-821-6437 is a Resistor,variable,wire Wound,pre, manufactured by Cae Usa Inc., classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-821-6437?

NSN 5905-00-821-6437 has 4 cross-referenced part numbers: RVBC2-32057-2 (Bowmar/tic Inc Sub of Bowmar Instrument Corp), R31-2 (Cae Usa Inc.), C450-203-5 (Micro-Lectric Inc), R31-2 (Raytheon Technical Services Company).

What NSN replaces 5905-00-821-6437?

There are 6 known substitutes for 5905-00-821-6437: 5950-00-089-1223, 4320-00-214-0127, 5340-00-489-5185 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R31-2?

Key specifications for R31-2: Terminal Type and Quantity: 8 SOLDER STUD; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 75.0 SINGLE SECTION; Mounting Method: CLAMP RING(S); Actuator Type: SINGLE SHAFT. 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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