PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300-501Resistor,variable,wire Wound,non

Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div · NSN 5905-00-256-7766 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-256-7766 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-256-7766. Primary manufacturer part number: 300-501.
Features
  • Resistor,variable,wire Wound,non — FSC 5905
  • Body Length: 0.312 INCHES NOMINAL IN
  • Actuator Type: FLUSH DRIVE WITH SLOT-HOLE
  • Ambient Temp in Deg Celsius Per Section at Full Rated Power: 60.0 SINGLE SECTION
  • Resistance Tolerance Per Section in Percent: -5.0 TO 5.0 SINGLE SECTION
  • Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 150.0 SINGLE SECTION
  • Actuator Travel Control Feature: STOPS
  • Electrical Resistance Per Section: 500.000 OHMS SINGLE SECTION
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 5905-00-256-7766, 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 Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5905-00-256-7766
Primary Part Number300-501
Item NameResistor,variable,wire Wound,non
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerTrw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div
StatusACTIVE
Body Length0.312 INCHES NOMINAL IN
Actuator TypeFLUSH DRIVE WITH SLOT-HOLE
Ambient Temp in Deg Celsius Per Section at Full Rated Power60.0 SINGLE SECTION
Resistance Tolerance Per Section in Percent-5.0 TO 5.0 SINGLE SECTION
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power150.0 SINGLE SECTION
Actuator Travel Control FeatureSTOPS
Electrical Resistance Per Section500.000 OHMS SINGLE SECTION
Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius-70.0 TO 70.0 SINGLE SECTION
Power Dissipation Rating Per Section in Watts0.6 FREE AIR SINGLE SECTION
Mounting MethodTERMINAL
Rotary Actuator Travel in Angular Deg300.0 NOMINAL
Terminal Type and Quantity3 PIN
Section Quantity1
Body Height0.312 INCHES NOMINAL IN
Terminal Length1.000 INCHES MINIMUM IN
Body Width0.234 INCHES NOMINAL IN
Body StyleRECTANGULAR
Maximum Stop Torque8.00 INCH-OUNCES IN
Maximum Starting Torque4.00 INCH-OUNCES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5330-00-102-8378300501 INTERCHANGEABLE
Packing,preformed
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
5985-00-106-0977 INTERCHANGEABLE
Antenna
5965-00-128-2974 INTERCHANGEABLE
Loudspeaker,permanent Magnet
5950-00-244-5926300501 INTERCHANGEABLE
Transformer,audio Frequency
Electronic Transformer Corp Div Electronic Transformer Corporation
1660-00-591-7151 INTERCHANGEABLE
Toggle Valve
5930-01-061-3351 INTERCHANGEABLE
Switch,push
Cross-Reference Index
Part NumberManufacturer
300-501 Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div (USA)
NNP5905838306598 Mn/ssf Marine Nationale / Service De Soutien De La Flotte (FRA)
Related Parts
5330-00-102-8378INTERCHANGEABLE
PACKING,PREFORMED
300501
5985-00-106-0977INTERCHANGEABLE
ANTENNA
5965-00-128-2974INTERCHANGEABLE
LOUDSPEAKER,PERMANENT MAGNET
5950-00-244-5926INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
300501
1660-00-591-7151INTERCHANGEABLE
TOGGLE VALVE
5930-01-061-3351INTERCHANGEABLE
SWITCH,PUSH

Frequently Asked Questions

What is NSN 5905-00-256-7766?

NSN 5905-00-256-7766 is a Resistor,variable,wire Wound,non, manufactured by Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-256-7766?

NSN 5905-00-256-7766 has 2 cross-referenced part numbers: 300-501 (Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div), NNP5905838306598 (Mn/ssf Marine Nationale / Service De Soutien De La Flotte).

What NSN replaces 5905-00-256-7766?

There are 6 known substitutes for 5905-00-256-7766: 5330-00-102-8378, 5985-00-106-0977, 5965-00-128-2974 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 300-501?

Key specifications for 300-501: Body Length: 0.312 INCHES NOMINAL IN; Actuator Type: FLUSH DRIVE WITH SLOT-HOLE; Overall Height: 0.312 INCHES NOMINAL IN; Ambient Temp in Deg Celsius Per Section at Full Rated Power: 60.0 SINGLE SECTION. 21 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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