PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66561Circuit Card Assembly

Viavi Solutionsllc · NSN 5998-01-418-1597 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-418-1597 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-418-1597. Primary manufacturer part number: 66561.
Features
  • Circuit Card Assembly — FSC 5998
  • 2 verified cross-references
  • Primary manufacturer: Viavi Solutionsllc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-418-1597, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Viavi Solutionsllc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-418-1597
Primary Part Number66561
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerViavi Solutionsllc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeYN
Weight0.9410 lbs
Cube0.3223 cu ft
Verified Substitutes 2
6680-01-200-179466561 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5120-01-630-3067510005504N INTERCHANGEABLE
Screwdriver,flat Tip
National Industries for the Blind
Cross-Reference Index
Part NumberManufacturer
66561 PRIMARY Viavi Solutionsllc (USA)
7011-8345-900 Viavi Solutionsllc (USA)
Related Parts
6680-01-200-1794INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
66561
5120-01-630-3067INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
510005504N

Frequently Asked Questions

What is NSN 5998-01-418-1597?

NSN 5998-01-418-1597 is a Circuit Card Assembly, manufactured by Viavi Solutionsllc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-418-1597?

NSN 5998-01-418-1597 has 2 cross-referenced part numbers: 66561 (Viavi Solutionsllc), 7011-8345-900 (Viavi Solutionsllc).

What NSN replaces 5998-01-418-1597?

There are 2 known substitutes for 5998-01-418-1597: 6680-01-200-1794, 5120-01-630-3067. Verify interchangeability with system specifications before substitution.

What are the specifications of 66561?

Key specifications for 66561: End Item Identification: DLA/GSA MANAGED ITEMS THAT CANNOT BE IDENTIFIED ARMY; End Item Identification: DLA/GSA MANAGED ITEMS THAT CANNOT BE IDENTIFIED ARMY. 2 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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