PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55321Resistor,variable,wire Wound,non

General Dynamics Mission Systems, Inc. · NSN 5905-00-644-8937 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-644-8937 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-644-8937. Primary manufacturer part number: 55321.
Features
  • Resistor,variable,wire Wound,non — FSC 5905
  • Mounting Bushing Length: 0.250 INCHES NOMINAL IN
  • Nonturn Device Location: AT 9 OCLOCK
  • Screw Thread Quantity Per Inch: 32.0
  • Actuator Type: SINGLE SHAFT
  • Power Dissipation Rating Per Section in Watts: 0.5 FREE AIR SINGLE SECTION
  • Terminal Location: RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
  • Actuator Travel Control Feature: STOPS
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 5905-00-644-8937, 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 General Dynamics Mission Systems, Inc.. Government technical data includes 26 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-644-8937
Primary Part Number55321
Item NameResistor,variable,wire Wound,non
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc.
StatusACTIVE
Mounting Bushing Length0.250 INCHES NOMINAL IN
Nonturn Device LocationAT 9 OCLOCK
Screw Thread Quantity Per Inch32.0
Actuator TypeSINGLE SHAFT
Power Dissipation Rating Per Section in Watts0.5 FREE AIR SINGLE SECTION
Terminal LocationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Actuator Travel Control FeatureSTOPS
Terminal Type and Quantity3 TAB, SOLDER LUG
Ambient Temp in Deg Celsius Per Section at Full Rated Power40.0 SINGLE SECTION
Resistance Tolerance Per Section in Percent-10.0 TO 10.0 SINGLE SECTION
Electrical Resistance Per Section700.000 OHMS SINGLE SECTION
Body StyleCYLINDRICAL BUSHING MOUNTED
Screw Thread Series DesignatorUNEF
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power105.0 SINGLE SECTION
Body Diameter1.266 INCHES NOMINAL IN
Mounting MethodSTANDARD BUSHING
Rotary Actuator Travel in Angular Deg300.0 NOMINAL
Shaft Diameter0.250 INCHES NOMINAL IN
Section Quantity1
Screw Thread Diameter0.375 INCHES NOMINAL IN
Effective Electrical Rotation in Deg Angular Rotation300.0 NOMINAL
Shaft Length0.500 INCHES NOMINAL IN
Shaft StyleROUND, SLOTTED
Reliability IndicatorNOT ESTABLISHED
Body Length0.625 INCHES NOMINAL IN
Nonturn Device Radius0.531 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2590-00-491-324955321 INTERCHANGEABLE
Reservoir Assembly
Mitsubishi Caterpillar Forklift America, Inc
3455-00-517-59671743-0312 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5999-00-534-3028SMB187082 INTERCHANGEABLE
Contact,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4920-01-041-018824P3598 INTERCHANGEABLE
Filter Fluid Film
Team Corporation Dba Team Corp
Cross-Reference Index
Part NumberManufacturer
W Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div (USA)
55321 Gte Products Corp Entertainment Products Group (USA)
55321 PRIMARY General Dynamics Mission Systems, Inc. (USA)
252-701KA1B2S016 Cts Corp of California Dba Cts Electronics Corp Paso Robles Div Electromechanical Group (USA)
Related Parts
2590-00-491-3249INTERCHANGEABLE
RESERVOIR ASSEMBLY
55321
3455-00-517-5967INTERCHANGEABLE
CUTTER,MILLING,END
1743-0312
5999-00-534-3028INTERCHANGEABLE
CONTACT,ELECTRICAL
SMB187082
4920-01-041-0188INTERCHANGEABLE
FILTER FLUID FILM
24P3598

Frequently Asked Questions

What is NSN 5905-00-644-8937?

NSN 5905-00-644-8937 is a Resistor,variable,wire Wound,non, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-644-8937?

NSN 5905-00-644-8937 has 4 cross-referenced part numbers: W (Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div), 55321 (Gte Products Corp Entertainment Products Group), 55321 (General Dynamics Mission Systems, Inc.), 252-701KA1B2S016 (Cts Corp of California Dba Cts Electronics Corp Paso Robles Div Electromechanical Group).

What NSN replaces 5905-00-644-8937?

There are 4 known substitutes for 5905-00-644-8937: 2590-00-491-3249, 3455-00-517-5967, 5999-00-534-3028 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55321?

Key specifications for 55321: Mounting Bushing Length: 0.250 INCHES NOMINAL IN; Nonturn Device Location: AT 9 OCLOCK; Screw Thread Quantity Per Inch: 32.0; 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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