PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21979Extender Card,electronic Test

Spectral Dynamics Inc · NSN 5998-01-087-7536 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-087-7536 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-087-7536. Primary manufacturer part number: 21979.
Features
  • Extender Card,electronic Test — FSC 5998
  • 3 verified cross-references
  • Primary manufacturer: Spectral Dynamics Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Extender Card,electronic Test, cataloged under National Stock Number 5998-01-087-7536, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Spectral Dynamics Inc. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameExtender Card,electronic Test
FSC / FSG5998 — Circuit Card Assembly (FSG 59)
ManufacturersSpectral Dynamics Inc (CAGE 78586); Meggitt (orange County), Inc. (CAGE 95411)
Technical Specifications
ParameterValue
NSN5998-01-087-7536
Primary Part Number21979
Item NameExtender Card,electronic Test
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerSpectral Dynamics Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.3100 lbs
Cube0.0570 cu ft
Verified Substitutes 7
5310-00-045-3296MS35338-43 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5930-00-058-8598SM-C-430302 INTERCHANGEABLE
Switch,push
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2510-00-175-00222-4023 INTERCHANGEABLE
Air Spring,vehicular
Pdi Ground Support Systems, Inc.
5835-00-301-381221979 INTERCHANGEABLE
Capstan,tape Drive
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
5330-00-310-385121979 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5365-01-110-03369N3879 INTERCHANGEABLE
Spacer,sleeve
Caterpillar Inc Div Caterpillar Defense
2990-01-217-500921979 INTERCHANGEABLE
Muffler,exhaust
Walker Mfg Co
Cross-Reference Index
Part NumberManufacturer
21979 PRIMARY Spectral Dynamics Inc (USA)
21979 Meggitt (orange County), Inc. (USA)
4831 ITEM 9 Meggitt (orange County), Inc. (USA)
Related Parts
5310-00-045-3296INTERCHANGEABLE
WASHER,LOCK
MS35338-43
5930-00-058-8598INTERCHANGEABLE
SWITCH,PUSH
SM-C-430302
2510-00-175-0022INTERCHANGEABLE
AIR SPRING,VEHICULAR
2-4023
5835-00-301-3812INTERCHANGEABLE
CAPSTAN,TAPE DRIVE
21979
5330-00-310-3851INTERCHANGEABLE
GASKET
21979
5365-01-110-0336INTERCHANGEABLE
SPACER,SLEEVE
9N3879
2990-01-217-5009INTERCHANGEABLE
MUFFLER,EXHAUST
21979

Frequently Asked Questions

What is NSN 5998-01-087-7536?

NSN 5998-01-087-7536 is a Extender Card,electronic Test, manufactured by Spectral Dynamics Inc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-087-7536?

NSN 5998-01-087-7536 has 3 cross-referenced part numbers: 21979 (Spectral Dynamics Inc), 21979 (Meggitt (orange County), Inc.), 4831 ITEM 9 (Meggitt (orange County), Inc.).

What NSN replaces 5998-01-087-7536?

There are 7 known substitutes for 5998-01-087-7536: 5310-00-045-3296, 5930-00-058-8598, 2510-00-175-0022 and 4 more. Verify interchangeability with system specifications before substitution.

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