PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

449AAttenuator,variable

Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp · NSN 5985-00-172-9778 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-172-9778 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-172-9778. Primary manufacturer part number: 449A.
Features
  • Attenuator,variable — FSC 5985
  • Application Design: TRANSMISSION LINE
  • 1 verified cross-reference
  • Primary manufacturer: Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-172-9778, 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 Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp. Government technical data includes 1 verified specification, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-172-9778
Primary Part Number449A
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
StatusACTIVE
Application DesignTRANSMISSION LINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5996-01-038-80335101 INTERCHANGEABLE
Amplifier,audio-Radio Frequency
Integrated Technology Lab, Inc. Dba Integrated Technology Lab Inc
Cross-Reference Index
Part NumberManufacturer
449A PRIMARY Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
Related Parts
5996-01-038-8033INTERCHANGEABLE
AMPLIFIER,AUDIO-RADIO FREQUENCY
5101

Frequently Asked Questions

What is NSN 5985-00-172-9778?

NSN 5985-00-172-9778 is a Attenuator,variable, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-172-9778?

NSN 5985-00-172-9778 has 1 cross-referenced part number: 449A (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp).

What NSN replaces 5985-00-172-9778?

There is 1 known substitute for 5985-00-172-9778: 5996-01-038-8033. Verify interchangeability with system specifications before substitution.

What are the specifications of 449A?

Key specifications for 449A: Application Design: TRANSMISSION LINE. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com