PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21261Circuit Card Assembly

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5998-01-097-8505 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-097-8505 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-097-8505. Primary manufacturer part number: 21261.
Features
  • Circuit Card Assembly — FSC 5998
  • 2 verified cross-references
  • Primary manufacturer: Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-097-8505, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5998-01-097-8505
Primary Part Number21261
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5307-00-206-4044212 INTERCHANGEABLE
Stud,plain
Industrial Technologies and Services Llc
5310-00-470-609321261 INTERCHANGEABLE
Nut,plain,hexagon
Dresser Industries Inc Waukesha Engine Div
2835-00-654-670321261 INTERCHANGEABLE
Pin Assembly,tie Down
Solar Turbines Incorporated Dba Solar Turbines Incorporated
5330-00-840-6932695862 INTERCHANGEABLE
Gasket
Hamilton Sundstrand Corporation
2990-00-860-97981985 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
3120-01-199-4453 INTERCHANGEABLE
Bearing,sleeve
6550-01-234-50524321261 INTERCHANGEABLE
Culture Medium,soybean-Casein Di
Cardinal Health 200, Llc
4820-01-416-787831792 INTERCHANGEABLE
Piston,valve
Canyon Engineering Products, Inc.
4820-01-417-230421261-001 INTERCHANGEABLE
Valve,check
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-417-231231761 INTERCHANGEABLE
Seat,valve
Canyon Engineering Products, Inc.
Cross-Reference Index
Part NumberManufacturer
21261 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21251H PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
5307-00-206-4044INTERCHANGEABLE
STUD,PLAIN
212
5310-00-470-6093INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21261
2835-00-654-6703INTERCHANGEABLE
PIN ASSEMBLY,TIE DOWN
21261
5330-00-840-6932INTERCHANGEABLE
GASKET
695862
2990-00-860-9798INTERCHANGEABLE
MUFFLER,EXHAUST
1985
3120-01-199-4453INTERCHANGEABLE
BEARING,SLEEVE
6550-01-234-5052INTERCHANGEABLE
CULTURE MEDIUM,SOYBEAN-CASEIN DI
4321261
4820-01-416-7878INTERCHANGEABLE
PISTON,VALVE
31792
4820-01-417-2304INTERCHANGEABLE
VALVE,CHECK
21261-001
4820-01-417-2312INTERCHANGEABLE
SEAT,VALVE
31761
4820-01-429-8387INTERCHANGEABLE
SLEEVE,DIRECTIONAL CONTROL LINEA
31791
6520-01-591-4615INTERCHANGEABLE
HANDPIECE,DENTAL
1007.5550

Frequently Asked Questions

What is NSN 5998-01-097-8505?

NSN 5998-01-097-8505 is a Circuit Card Assembly, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-097-8505?

NSN 5998-01-097-8505 has 2 cross-referenced part numbers: 21261 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21251H (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5998-01-097-8505?

There are 12 known substitutes for 5998-01-097-8505: 5307-00-206-4044, 5310-00-470-6093, 2835-00-654-6703 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21261?

Key specifications for 21261: Special Features: CAPACITOR 46,DIODE 6,MICROCIRCUIT 57,RESISTOR 66,TRANSISTOR 3,PRINTED WIRING BOARD 1; Special Features: CAPACITOR 46,DIODE 6,MICROCIRCUIT 57,RESISTOR 66,TRANSISTOR 3,PRINTED WIRING BOARD 1. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com