PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204356Attenuator,variable

Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq · NSN 5985-00-146-8529 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-146-8529 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-146-8529. Primary manufacturer part number: 204356.
Features
  • Attenuator,variable — FSC 5985
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.250 INCHES NOMINAL IN
  • Coaxial Connector Series Designation: NPM
  • Step Position Quantity: 9
  • Mounting Facility Pattern: FOUR POSITION RECTANGULAR
  • Mounting Thread Quantity: 32 PER INCH
  • Overall Attenuation Range in Decibels: +0.0 TO 9.0
  • 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 5985-00-146-8529, 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 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN5985-00-146-8529
Primary Part Number204356
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNarda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
StatusACTIVE
Center to Center Distance Between Mounting Facilities Parallel to Length2.250 INCHES NOMINAL IN
Coaxial Connector Series DesignationNPM
Step Position Quantity9
Mounting Facility PatternFOUR POSITION RECTANGULAR
Mounting Thread Quantity32 PER INCH
Overall Attenuation Range in Decibels+0.0 TO 9.0
Attenuation Variation MethodSTEPPED
Attenuation Per Step in Decibels1.0
Terminal Type and Quantity2 CONNECTOR, COAXIAL, FEMALE
Mounting Facility Type and Quantity4 THREADED HOLE(S)
Impedance Rating in Ohms50.0 INPUT-OUTPUT
Mounting Facility Nominal Screw Thread Diameter0.138 INCHES IN
Adjustment Device Type and Quantity1 KNOB
Application DesignTRANSMISSION LINE
Mounting Facility Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Body StyleCOAXIAL TYPE
Center to Center Distance Between Mounting Facilities Parallel to Width1.438 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5360-00-316-643523218 INTERCHANGEABLE
Spring
Signode Corp
5360-00-536-154722300016 INTERCHANGEABLE
Spring,castle Ratch
Waltham Aircraft Clock Corp
8520-01-389-070723218 INTERCHANGEABLE
Hand Cleaner
Permatex, Inc. Div Itw Permatex
6640-01-595-358613362 INTERCHANGEABLE
Holder,crucible
Bego Usa Inc
Cross-Reference Index
Part NumberManufacturer
204356 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
23218 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
6904-2546 Drs Icas, Llc (USA)
SC6904-2546-1 Drs Icas, Llc (USA)
Related Parts
5360-00-316-6435INTERCHANGEABLE
SPRING
23218
5360-00-536-1547INTERCHANGEABLE
SPRING,CASTLE RATCH
22300016
8520-01-389-0707INTERCHANGEABLE
HAND CLEANER
23218
6640-01-595-3586INTERCHANGEABLE
HOLDER,CRUCIBLE
13362

Frequently Asked Questions

What is NSN 5985-00-146-8529?

NSN 5985-00-146-8529 is a Attenuator,variable, manufactured by Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-146-8529?

NSN 5985-00-146-8529 has 4 cross-referenced part numbers: 204356 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 23218 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 6904-2546 (Drs Icas, Llc), SC6904-2546-1 (Drs Icas, Llc).

What NSN replaces 5985-00-146-8529?

There are 4 known substitutes for 5985-00-146-8529: 5360-00-316-6435, 5360-00-536-1547, 8520-01-389-0707 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 204356?

Key specifications for 204356: Center to Center Distance Between Mounting Facilities Parallel to Length: 2.250 INCHES NOMINAL IN; Coaxial Connector Series Designation: NPM; Step Position Quantity: 9; Mounting Facility Pattern: FOUR POSITION RECTANGULAR. 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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