PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4Attenuator,variable

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5985-00-823-5396 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-823-5396 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-823-5396. Primary manufacturer part number: 4.
Features
  • Attenuator,variable — FSC 5985
  • Mounting Facility Type and Quantity: 4 TERMINAL WITH MOUNTING HOLES
  • Unthreaded Mounting Hole Diameter: 0.116 INCHES NOMINAL IN
  • Application Design: WAVEGUIDE
  • Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.8
  • Power Rating: 1.0 WATTS AVERAGE
  • Frequency Range: 26.500 GIGAHERTZ MINIMUM AND 40.000 GIGAHERTZ MAXIMUM
  • Overall Attenuation Range in Decibels: +0.0 TO 50.0
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-823-5396, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 11 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
NSN5985-00-823-5396
Primary Part Number4
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Mounting Facility Type and Quantity4 TERMINAL WITH MOUNTING HOLES
Unthreaded Mounting Hole Diameter0.116 INCHES NOMINAL IN
Application DesignWAVEGUIDE
Insertion Loss at Minimum Attenuation in Maximum Decibels0.8
Power Rating1.0 WATTS AVERAGE
Frequency Range26.500 GIGAHERTZ MINIMUM AND 40.000 GIGAHERTZ MAXIMUM
Overall Attenuation Range in Decibels+0.0 TO 50.0
Attenuation Variation MethodCONTINUOUS
Terminal Type and Quantity2 FLANGE
Waveguide Flange DesignationUG-599/U
Overall Attenuation Accuracy in Decibels-0.50 TO 0.50
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5985-00-993-9085 INTERCHANGEABLE
Attenuator,variable
Cross-Reference Index
Part NumberManufacturer
4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILA38728 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5985-00-993-9085INTERCHANGEABLE
ATTENUATOR,VARIABLE

Frequently Asked Questions

What is NSN 5985-00-823-5396?

NSN 5985-00-823-5396 is a Attenuator,variable, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-823-5396?

NSN 5985-00-823-5396 has 2 cross-referenced part numbers: 4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILA38728 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5985-00-823-5396?

There is 1 known substitute for 5985-00-823-5396: 5985-00-993-9085. Verify interchangeability with system specifications before substitution.

What are the specifications of 4?

Key specifications for 4: Mounting Facility Type and Quantity: 4 TERMINAL WITH MOUNTING HOLES; Unthreaded Mounting Hole Diameter: 0.116 INCHES NOMINAL IN; Application Design: WAVEGUIDE; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.8. 12 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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