PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21721Circuit Card Assembly

Ocean Technology Inc · NSN 5998-01-074-2503 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-074-2503 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-074-2503. Primary manufacturer part number: 21721.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Ocean Technology 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 5998-01-074-2503, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ocean Technology Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-074-2503
Primary Part Number21721
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerOcean Technology Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code00
Unit of IssueEA
SMR CodeCE
Weight1.0000 lbs
Cube0.1389 cu ft
Verified Substitutes 9
1650-00-757-5080723228 INTERCHANGEABLE
Plate,seal
Hamilton Sundstrand Corporation
2040-00-841-8823 INTERCHANGEABLE
Parts Kit
1377-00-872-57002172-1 INTERCHANGEABLE
Head Assy,safety
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
3455-01-047-428529997 INTERCHANGEABLE
Reamer,machine
Kennametal Inc. Div Kennametal Industrial Products Group
5307-01-229-626121721 INTERCHANGEABLE
Stud,plain
Industrial Technologies and Services Llc
3120-01-266-8500 INTERCHANGEABLE
Bushing,sleeve
1680-01-492-479021721 INTERCHANGEABLE
Flange Mounting
Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations
2930-01-566-77856038409 INTERCHANGEABLE
Cooler,lubricating Oil,engine
Am General Llc
5930-01-633-487521721 INTERCHANGEABLE
Guard,switch
Willard Marine, Inc.
Cross-Reference Index
Part NumberManufacturer
21721 Ocean Technology Inc (USA)
Related Parts
1650-00-757-5080INTERCHANGEABLE
PLATE,SEAL
723228
2040-00-841-8823INTERCHANGEABLE
PARTS KIT
1377-00-872-5700INTERCHANGEABLE
HEAD ASSY,SAFETY
2172-1
3455-01-047-4285INTERCHANGEABLE
REAMER,MACHINE
29997
5307-01-229-6261INTERCHANGEABLE
STUD,PLAIN
21721
3120-01-266-8500INTERCHANGEABLE
BUSHING,SLEEVE
1680-01-492-4790INTERCHANGEABLE
FLANGE MOUNTING
21721
2930-01-566-7785INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
6038409
5930-01-633-4875INTERCHANGEABLE
GUARD,SWITCH
21721

Frequently Asked Questions

What is NSN 5998-01-074-2503?

NSN 5998-01-074-2503 is a Circuit Card Assembly, manufactured by Ocean Technology Inc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-074-2503?

NSN 5998-01-074-2503 has 1 cross-referenced part number: 21721 (Ocean Technology Inc).

What NSN replaces 5998-01-074-2503?

There are 9 known substitutes for 5998-01-074-2503: 1650-00-757-5080, 2040-00-841-8823, 1377-00-872-5700 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21721?

Key specifications for 21721: Special Features: CAPACITOR 59,CONNECTOR 1,DIODE 15,EJECTOR,CARD 2,MICROCIRCUIT 19,PRINTED WIRING BOARD 1,RESISTOR 73; Overall Width: 5.250 INCHES NOMINAL IN; Overall Length: 5.500 INCHES NOMINAL IN; Overall Height: 0.565 INCHES MAXIMUM IN. 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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