PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21056Circuit Card Assembly

Trio Laboratories Inc · NSN 5998-00-009-7089 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-00-009-7089 — this item is cataloged by the U.S. Government under National Stock Number 5998-00-009-7089. Primary manufacturer part number: 21056.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Trio Laboratories Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-00-009-7089, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Trio Laboratories Inc. This item has 1 commercial cross-reference 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.

Technical Specifications
ParameterValue
NSN5998-00-009-7089
Primary Part Number21056
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerTrio Laboratories Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-274-77311A9673 INTERCHANGEABLE
Nut,plain,castellated,hexagon
Napco International Llc Dba Napco International Inc
5962-01-102-5314538766-1 INTERCHANGEABLE
Microcircuit,memory
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
21056 Trio Laboratories Inc (USA)
Related Parts
5310-00-274-7731INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
1A9673
5962-01-102-5314INTERCHANGEABLE
MICROCIRCUIT,MEMORY
538766-1

Frequently Asked Questions

What is NSN 5998-00-009-7089?

NSN 5998-00-009-7089 is a Circuit Card Assembly, manufactured by Trio Laboratories Inc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-00-009-7089?

NSN 5998-00-009-7089 has 1 cross-referenced part number: 21056 (Trio Laboratories Inc).

What NSN replaces 5998-00-009-7089?

There are 2 known substitutes for 5998-00-009-7089: 5310-00-274-7731, 5962-01-102-5314. Verify interchangeability with system specifications before substitution.

What are the specifications of 21056?

Key specifications for 21056: Special Features: PRINTED WIRING BOARD 1,CAPACITOR 6,DIODE 48; Special Features: PRINTED WIRING BOARD 1,CAPACITOR 6,DIODE 48. 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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