PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18W-20Attenuator,fixed

Spectrum Control Inc Div Weinschel · NSN 5985-01-349-3268 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-349-3268 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-349-3268. Primary manufacturer part number: 18W-20.
Features
  • Attenuator,fixed — FSC 5985
  • Frequency Range: 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM
  • Rf Signal Attenuation in Decibels: 20.0
  • Input Impedance Rating in Ohms: 50.0
  • Overall Diameter: 0.580 INCHES NOMINAL IN
  • Application Design: TRANSMISSION LINE
  • 2 verified cross-references
  • Primary manufacturer: Spectrum Control Inc Div Weinschel
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-349-3268, 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 Spectrum Control Inc Div Weinschel. Government technical data includes 5 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-349-3268
Primary Part Number18W-20
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerSpectrum Control Inc Div Weinschel
StatusACTIVE
Frequency Range0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM
Rf Signal Attenuation in Decibels20.0
Input Impedance Rating in Ohms50.0
Overall Diameter0.580 INCHES NOMINAL IN
Application DesignTRANSMISSION LINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5985-00-256-0902C4628-4 INTERCHANGEABLE
Attenuator,fixed
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
Cross-Reference Index
Part NumberManufacturer
18W-20 PRIMARY Spectrum Control Inc Div Weinschel (USA)
18B-20 Spectrum Control Inc Div Weinschel (USA)
Related Parts
5985-00-256-0902INTERCHANGEABLE
ATTENUATOR,FIXED
C4628-4

Frequently Asked Questions

What is NSN 5985-01-349-3268?

NSN 5985-01-349-3268 is a Attenuator,fixed, manufactured by Spectrum Control Inc Div Weinschel, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-349-3268?

NSN 5985-01-349-3268 has 2 cross-referenced part numbers: 18W-20 (Spectrum Control Inc Div Weinschel), 18B-20 (Spectrum Control Inc Div Weinschel).

What NSN replaces 5985-01-349-3268?

There is 1 known substitute for 5985-01-349-3268: 5985-00-256-0902. Verify interchangeability with system specifications before substitution.

What are the specifications of 18W-20?

Key specifications for 18W-20: Frequency Range: 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM; Rf Signal Attenuation in Decibels: 20.0; Input Impedance Rating in Ohms: 50.0; Overall Diameter: 0.580 INCHES NOMINAL IN. 6 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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