PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T500Attenuator,variable

Yosemite Investment Inc Dba North American Capacitor Co · NSN 5985-00-256-6390 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-256-6390 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-256-6390. Primary manufacturer part number: T500.
Features
  • Attenuator,variable — FSC 5985
  • Application Design: AUDIO
  • Overall Attenuation Range in Decibels: +0.0 TO 38.0
  • Schematic Diagram Designator: "T"
  • Adjustment Device Type and Quantity: 2 SHAFT
  • Overall Attenuation Accuracy in Decibels: -1.90 TO 1.90
  • Mounting Thread Quantity: 32 PER INCH
  • Terminal Type and Quantity: 6 TAB, SOLDER LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-256-6390, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Yosemite Investment Inc Dba North American Capacitor Co. Government technical data includes 20 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-256-6390
Primary Part NumberT500
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerYosemite Investment Inc Dba North American Capacitor Co
StatusCANCELLED
Application DesignAUDIO
Overall Attenuation Range in Decibels+0.0 TO 38.0
Schematic Diagram Designator"T"
Adjustment Device Type and Quantity2 SHAFT
Overall Attenuation Accuracy in Decibels-1.90 TO 1.90
Mounting Thread Quantity32 PER INCH
Terminal Type and Quantity6 TAB, SOLDER LUG
Body StyleCYLINDRICAL W/SIDE TERMINALS
Impedance Rating in Ohms500.0 INPUT-OUTPUT
Bushing Length0.375 INCHES NOMINAL IN
Shaft Diameter0.250 INCHES NOMINAL IN
Power Rating4.0 WATTS AVERAGE
Mounting Facility Screw Thread Series DesignatorUNEF
Mounting Facility Type and Quantity1 THREADED BUSHING
Shaft TypeROUND
Body Diameter1.625 INCHES NOMINAL IN
Shaft Length2.000 INCHES NOMINAL IN
Mounting Facility Nominal Screw Thread Diameter0.375 INCHES IN
Attenuation Variation MethodCONTINUOUS
Body Length1.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5950-00-087-4970TF512U INTERCHANGEABLE
Transformer,power
Joint Electronics Type Designation System
5310-00-185-6358 INTERCHANGEABLE
Nut,plain,round
5961-00-683-4650 INTERCHANGEABLE
Semiconductor Device,diode
3805-00-857-2449 INTERCHANGEABLE
Grader,road,motorized
6515-01-056-8336 INTERCHANGEABLE
Tourniquet,nonpneumatic
5110-01-189-9601 INTERCHANGEABLE
Cutter,cable,hand Operated
3448-01-362-5446T-501 INTERCHANGEABLE
Riveting Machine,impact Type,ele
Taumel Noiseless Riveters
5950-01-373-5297T50-0 INTERCHANGEABLE
Form,coil
Micrometals Inc
4235-01-399-3029HP-500 INTERCHANGEABLE
Sorbent,oil
3m Company
6640-01-608-9063T500 INTERCHANGEABLE
Tube,biological Culture Sampling
Charles River Laboratories, Inc.
Cross-Reference Index
Part NumberManufacturer
T500 Yosemite Investment Inc Dba North American Capacitor Co (USA)
Related Parts
5950-00-087-4970INTERCHANGEABLE
TRANSFORMER,POWER
TF512U
5310-00-185-6358INTERCHANGEABLE
NUT,PLAIN,ROUND
5961-00-683-4650INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3805-00-857-2449INTERCHANGEABLE
GRADER,ROAD,MOTORIZED
6515-01-056-8336INTERCHANGEABLE
TOURNIQUET,NONPNEUMATIC
5110-01-189-9601INTERCHANGEABLE
CUTTER,CABLE,HAND OPERATED
3448-01-362-5446INTERCHANGEABLE
RIVETING MACHINE,IMPACT TYPE,ELE
T-501
5950-01-373-5297INTERCHANGEABLE
FORM,COIL
T50-0
4235-01-399-3029INTERCHANGEABLE
SORBENT,OIL
HP-500
6640-01-608-9063INTERCHANGEABLE
TUBE,BIOLOGICAL CULTURE SAMPLING
T500
7910-01-669-9618INTERCHANGEABLE
SCRUBBING MACHINE,FLOOR,ELECTRIC
T500

Frequently Asked Questions

What is NSN 5985-00-256-6390?

NSN 5985-00-256-6390 is a Attenuator,variable, manufactured by Yosemite Investment Inc Dba North American Capacitor Co, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-256-6390?

NSN 5985-00-256-6390 has 1 cross-referenced part number: T500 (Yosemite Investment Inc Dba North American Capacitor Co).

What NSN replaces 5985-00-256-6390?

There are 11 known substitutes for 5985-00-256-6390: 5950-00-087-4970, 5310-00-185-6358, 5961-00-683-4650 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T500?

Key specifications for T500: Application Design: AUDIO; Overall Attenuation Range in Decibels: +0.0 TO 38.0; Schematic Diagram Designator: "T"; Overall Width: 1.625 INCHES NOMINAL IN. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-256-6390 still in active supply?

NSN 5985-00-256-6390 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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