PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2989Attenuator,variable

Meggitt (new Hampshire), Inc · NSN 5985-00-351-3495 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-351-3495 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-351-3495. Primary manufacturer part number: 2989.
Features
  • Attenuator,variable — FSC 5985
  • Terminal Type and Quantity: 3 TAB, SOLDER LUG
  • Overall Attenuation Range in Decibels: +0.0 TO 60.0
  • Attenuation Per Step in Decibels: 5.0
  • Application Design: AUDIO
  • Mounting Facility Screw Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Power Rating: 500.0 MILLIWATTS AVERAGE
  • Attenuation Variation Method: STEPPED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-351-3495, 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 Meggitt (new Hampshire), Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-351-3495
Primary Part Number2989
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMeggitt (new Hampshire), Inc
StatusCANCELLED
Terminal Type and Quantity3 TAB, SOLDER LUG
Overall Attenuation Range in Decibels+0.0 TO 60.0
Attenuation Per Step in Decibels5.0
Application DesignAUDIO
Mounting Facility Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Power Rating500.0 MILLIWATTS AVERAGE
Attenuation Variation MethodSTEPPED
Mounting Facility PatternTWO POSITION IN-LINE
Overall Attenuation Accuracy in Decibels-0.30 TO 0.30
Body Diameter2.250 INCHES NOMINAL IN
Distance Between Mounting Facility Centers1.500 INCHES NOMINAL IN
Mounting Thread Quantity32 PER INCH
Impedance Rating in Ohms600.0 INPUT-OUTPUT
Step Position Quantity12
Frequency Range0.000 KILOHERTZ MINIMUM AND 20.000 KILOHERTZ MAXIMUM
Mounting Facility Nominal Screw Thread Diameter0.164 INCHES IN
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
2530-00-028-3314F13621 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
6250-00-048-6374502X63 INTERCHANGEABLE
Lampholder
General Electric Company
4920-00-218-12562989 INTERCHANGEABLE
Fixture,aircraft Maintenance
Allison Transmission Inc Dba Allison Transmission, Inc
4730-00-287-1032AS5195B0402 INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
3130-01-141-6233 INTERCHANGEABLE
Housing,bearing Unit
3040-01-294-44499240-032-89 INTERCHANGEABLE
Bracket,eye,rotating Shaft
Naval Sea Systems Command Logistics Support Engineering Activity
5310-01-718-823729891 INTERCHANGEABLE
Nut,self-Locking,blind Rivet
Tifco Industries, Inc. Dba Tifco Industries Inc
2040-01-728-979129891 INTERCHANGEABLE
Hatch,marine
Vigor Works Llc
Cross-Reference Index
Part NumberManufacturer
2989 PRIMARY Meggitt (new Hampshire), Inc (USA)
2989-1 PRIMARY Meggitt (new Hampshire), Inc (USA)
Related Parts
2530-00-028-3314INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
F13621
6250-00-048-6374INTERCHANGEABLE
LAMPHOLDER
502X63
4920-00-218-1256INTERCHANGEABLE
FIXTURE,AIRCRAFT MAINTENANCE
2989
4730-00-287-1032INTERCHANGEABLE
ELBOW,PIPE TO TUBE
AS5195B0402
3130-01-141-6233INTERCHANGEABLE
HOUSING,BEARING UNIT
3040-01-294-4449INTERCHANGEABLE
BRACKET,EYE,ROTATING SHAFT
9240-032-89
5310-01-718-8237INTERCHANGEABLE
NUT,SELF-LOCKING,BLIND RIVET
29891
2040-01-728-9791INTERCHANGEABLE
HATCH,MARINE
29891

Frequently Asked Questions

What is NSN 5985-00-351-3495?

NSN 5985-00-351-3495 is a Attenuator,variable, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-351-3495?

NSN 5985-00-351-3495 has 2 cross-referenced part numbers: 2989 (Meggitt (new Hampshire), Inc), 2989-1 (Meggitt (new Hampshire), Inc).

What NSN replaces 5985-00-351-3495?

There are 8 known substitutes for 5985-00-351-3495: 2530-00-028-3314, 6250-00-048-6374, 4920-00-218-1256 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2989?

Key specifications for 2989: Terminal Type and Quantity: 3 TAB, SOLDER LUG; Overall Attenuation Range in Decibels: +0.0 TO 60.0; Attenuation Per Step in Decibels: 5.0; Application Design: AUDIO. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-351-3495 still in active supply?

NSN 5985-00-351-3495 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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