PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18889Circuit Card Assembly

Mcnab, Incorporated · NSN 5998-01-201-6421 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-201-6421 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-201-6421. Primary manufacturer part number: 18889.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Mcnab, Incorporated
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-201-6421, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Mcnab, Incorporated. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCircuit Card Assembly
FSC / FSG5998 — Circuit Card Assembly (FSG 59)
ManufacturersMcnab, Incorporated (CAGE 39425)
Technical Specifications
ParameterValue
NSN5998-01-201-6421
Primary Part Number18889
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerMcnab, Incorporated
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5325-00-306-1440 INTERCHANGEABLE
Ring,retaining
3020-00-700-4566 INTERCHANGEABLE
Gear Assy
6615-00-724-088318889-REV-F INTERCHANGEABLE
Parts Kit,actuator
Cadillac Gage Textron Inc.
6125-01-073-534118889 INTERCHANGEABLE
Motor-Generator
Kurz & Root Generator Company, Llc
4820-01-389-037818889 INTERCHANGEABLE
Disk,valve
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5340-01-646-569318889 INTERCHANGEABLE
Plate,mending
Teledyne Flir Unmanned Ground Systems, Inc
Cross-Reference Index
Part NumberManufacturer
18889 Mcnab, Incorporated (USA)
Related Parts
5325-00-306-1440INTERCHANGEABLE
RING,RETAINING
3020-00-700-4566INTERCHANGEABLE
GEAR ASSY
6615-00-724-0883INTERCHANGEABLE
PARTS KIT,ACTUATOR
18889-REV-F
6125-01-073-5341INTERCHANGEABLE
MOTOR-GENERATOR
18889
4820-01-389-0378INTERCHANGEABLE
DISK,VALVE
18889
5340-01-646-5693INTERCHANGEABLE
PLATE,MENDING
18889

Frequently Asked Questions

What is NSN 5998-01-201-6421?

NSN 5998-01-201-6421 is a Circuit Card Assembly, manufactured by Mcnab, Incorporated, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-201-6421?

NSN 5998-01-201-6421 has 1 cross-referenced part number: 18889 (Mcnab, Incorporated).

What NSN replaces 5998-01-201-6421?

There are 6 known substitutes for 5998-01-201-6421: 5325-00-306-1440, 3020-00-700-4566, 6615-00-724-0883 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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