PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21443-1Circuit Card Assembly

Rex Systems Incorporated Dba Rex Systems Inc · NSN 5998-00-848-8978 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-00-848-8978 — this item is cataloged by the U.S. Government under National Stock Number 5998-00-848-8978. Primary manufacturer part number: 21443-1.
Features
  • Circuit Card Assembly — FSC 5998
  • 9 verified cross-references
  • Primary manufacturer: Rex Systems Incorporated Dba Rex Systems 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 5998-00-848-8978, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Rex Systems Incorporated Dba Rex Systems Inc. This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-00-848-8978
Primary Part Number21443-1
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerRex Systems Incorporated Dba Rex Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-525-0488 (21443)
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeZF
Weight0.1000 lbs
Cube0.0052 cu ft
Verified Substitutes 11
6625-00-525-048821443 SUCCESSOR
Case,test Set
L3harris Technologies, Inc. Div Space and Airborne Systems
4730-00-115-3864 INTERCHANGEABLE
Reducer,tube
5310-00-208-2855 INTERCHANGEABLE
Nut,plain,hexagon
3120-00-350-3780214431 INTERCHANGEABLE
Bearing,sleeve
The Oilgear Company Dba Jiffy Lube 213 Div Oilgear
3120-00-354-64061A21-443 INTERCHANGEABLE
Bearing,sleeve
Fwd Seagrave Holdings Lp
5970-00-708-87142-144-3 INTERCHANGEABLE
Insulator,plate
Precision Aerospace Corporation Dba Precision Engine Control
6665-00-761-295221443 INTERCHANGEABLE
Cord,probe,retractible
Mirion Technologies (canberra), Inc.
5945-00-945-5441 INTERCHANGEABLE
Relay,electromagnetic
3020-01-131-252232610001 INTERCHANGEABLE
Gear,spur
Mechanical Tool and Engineering Co
2915-01-201-7766214431 INTERCHANGEABLE
Impeller,pump,centrifugal
Eaton Corp Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
21443-1 Shiloh Industries Inc (USA)
21443-1 Raytheon Company Dba Raytheon Co (USA)
21443-1 Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA)
21443-1 PRIMARY Rex Systems Incorporated Dba Rex Systems Inc (USA)
21443-1 Bae Systems Information and Electronic Systems Integration Inc. (USA)
21443-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
21443-1 Sypris Electronics, Llc Dba Sypris Electronics Llc (USA)
21443 Trio Laboratories Inc (USA)
A10597 Autodyne Manufacturing Co Inc (USA)
Related Parts
SUCCESSOR 6625-00-525-0488 Case,test Set · 21443
4730-00-115-3864INTERCHANGEABLE
REDUCER,TUBE
5310-00-208-2855INTERCHANGEABLE
NUT,PLAIN,HEXAGON
3120-00-350-3780INTERCHANGEABLE
BEARING,SLEEVE
214431
3120-00-354-6406INTERCHANGEABLE
BEARING,SLEEVE
1A21-443
5970-00-708-8714INTERCHANGEABLE
INSULATOR,PLATE
2-144-3
6665-00-761-2952INTERCHANGEABLE
CORD,PROBE,RETRACTIBLE
21443
5945-00-945-5441INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3020-01-131-2522INTERCHANGEABLE
GEAR,SPUR
32610001
2915-01-201-7766INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
214431
6685-01-511-2329INTERCHANGEABLE
PROBE,HUMIDITY-TEMPERATURE
21443

Frequently Asked Questions

What is NSN 5998-00-848-8978?

NSN 5998-00-848-8978 is a Circuit Card Assembly, manufactured by Rex Systems Incorporated Dba Rex Systems Inc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-00-848-8978?

NSN 5998-00-848-8978 has 9 cross-referenced part numbers: 21443-1 (Shiloh Industries Inc), 21443-1 (Raytheon Company Dba Raytheon Co), 21443-1 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc), 21443-1 (Rex Systems Incorporated Dba Rex Systems Inc), 21443-1 (Bae Systems Information and Electronic Systems Integration Inc.) and 4 more.

What NSN replaces 5998-00-848-8978?

There are 11 known substitutes for 5998-00-848-8978: 6625-00-525-0488, 4730-00-115-3864, 5310-00-208-2855 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21443-1?

Key specifications for 21443-1: Overall Height: 0.761 INCHES NOMINAL IN; Overall Width: 1.600 INCHES NOMINAL IN; Overall Length: 1.600 INCHES NOMINAL IN; Special Features: PRINTED WIRING BOARD 1; TRANSISTOR 1; DIODE 3; TRANSFORMER 1; RESISTOR 11; CAPACITOR 5; CONTACT 6. 8 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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