PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21693Circuit Card Assembly

Giga-Tronics Incorporated Dba Giga-Tronics · NSN 5998-01-478-9108 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-478-9108 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-478-9108. Primary manufacturer part number: 21693.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Giga-Tronics Incorporated Dba Giga-Tronics
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-478-9108, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Giga-Tronics Incorporated Dba Giga-Tronics. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-478-9108
Primary Part Number21693
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerGiga-Tronics Incorporated Dba Giga-Tronics
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeG
Unit of IssueEA
SMR CodeYD
Verified Substitutes 8
6620-00-006-6418 INTERCHANGEABLE
Gage,pressure,dial Indicating
6625-00-043-386021693 INTERCHANGEABLE
Amplifier-Detector
Electrodynamics Inc Div L3harris Electrodynamics Inc
5310-00-318-4336120127 INTERCHANGEABLE
Washer,flat
Am General Llc
2910-00-360-4544C105-257 INTERCHANGEABLE
Shaft
Zenith Fuel Systems Llc
5360-00-544-555921693 INTERCHANGEABLE
Spring,sector Gear
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
2835-00-659-054621693 INTERCHANGEABLE
Guard Assembly,actuator
Alamo Aircraft, Ltd.
4320-00-937-111821693 INTERCHANGEABLE
Hub,short,pump
Industrial Technologies and Services Llc
5340-01-678-165221693 INTERCHANGEABLE
Bracket,angle
Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools
Cross-Reference Index
Part NumberManufacturer
21693 PRIMARY Giga-Tronics Incorporated Dba Giga-Tronics (USA)
Related Parts
6620-00-006-6418INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6625-00-043-3860INTERCHANGEABLE
AMPLIFIER-DETECTOR
21693
5310-00-318-4336INTERCHANGEABLE
WASHER,FLAT
120127
2910-00-360-4544INTERCHANGEABLE
SHAFT
C105-257
5360-00-544-5559INTERCHANGEABLE
SPRING,SECTOR GEAR
21693
2835-00-659-0546INTERCHANGEABLE
GUARD ASSEMBLY,ACTUATOR
21693
4320-00-937-1118INTERCHANGEABLE
HUB,SHORT,PUMP
21693
5340-01-678-1652INTERCHANGEABLE
BRACKET,ANGLE
21693

Frequently Asked Questions

What is NSN 5998-01-478-9108?

NSN 5998-01-478-9108 is a Circuit Card Assembly, manufactured by Giga-Tronics Incorporated Dba Giga-Tronics, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-478-9108?

NSN 5998-01-478-9108 has 1 cross-referenced part number: 21693 (Giga-Tronics Incorporated Dba Giga-Tronics).

What NSN replaces 5998-01-478-9108?

There are 8 known substitutes for 5998-01-478-9108: 6620-00-006-6418, 6625-00-043-3860, 5310-00-318-4336 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21693?

Key specifications for 21693: End Item Identification: DEFEN SATELLITE COMMUNICATIONS SYSTEM (DSCS)TERMINALS AN/FSC-78/79 4B; End Item Identification: DEFEN SATELLITE COMMUNICATIONS SYSTEM (DSCS)TERMINALS AN/FSC-78/79 4B. 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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