PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21309Circuit Card Assembly

Anritsu Instruments Company Div Mbu · NSN 5998-01-371-4806 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-371-4806 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-371-4806. Primary manufacturer part number: 21309.
Features
  • Circuit Card Assembly — FSC 5998
  • 1 verified cross-reference
  • Primary manufacturer: Anritsu Instruments Company Div Mbu
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-371-4806, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Anritsu Instruments Company Div Mbu. 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
NSN5998-01-371-4806
Primary Part Number21309
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerAnritsu Instruments Company Div Mbu
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Verified Substitutes 8
3110-00-156-142221309 INTERCHANGEABLE
Bearing,roller,self-Aligning
Naval Ship Systems Command
6685-00-249-7662151-6 INTERCHANGEABLE
Control,temperature,indicating
Emerson Electric Co White Rodgers Co Div
9540-00-261-5637 INTERCHANGEABLE
Angle,structural
9540-00-540-5937 INTERCHANGEABLE
Angle,structural
9540-00-720-1324 INTERCHANGEABLE
Angle,structural
5331-00-762-7483S2603-19T INTERCHANGEABLE
O-Ring
Trelleborg Sealing Solutions Us, Inc.
4820-01-417-940621309-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4730-01-419-708721317-1018-18 INTERCHANGEABLE
Restrictor,fluid Flow
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21309 PRIMARY Anritsu Instruments Company Div Mbu (USA)
Related Parts
3110-00-156-1422INTERCHANGEABLE
BEARING,ROLLER,SELF-ALIGNING
21309
6685-00-249-7662INTERCHANGEABLE
CONTROL,TEMPERATURE,INDICATING
151-6
9540-00-261-5637INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-540-5937INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-720-1324INTERCHANGEABLE
ANGLE,STRUCTURAL
5331-00-762-7483INTERCHANGEABLE
O-RING
S2603-19T
4820-01-417-9406INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21309-001
4730-01-419-7087INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
21317-1018-18

Frequently Asked Questions

What is NSN 5998-01-371-4806?

NSN 5998-01-371-4806 is a Circuit Card Assembly, manufactured by Anritsu Instruments Company Div Mbu, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-371-4806?

NSN 5998-01-371-4806 has 1 cross-referenced part number: 21309 (Anritsu Instruments Company Div Mbu).

What NSN replaces 5998-01-371-4806?

There are 8 known substitutes for 5998-01-371-4806: 3110-00-156-1422, 6685-00-249-7662, 9540-00-261-5637 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21309?

Key specifications for 21309: Part Name Assigned by Controlling Agency: CIRCUIT CARD ASSEMBLY PREAMP; End Item Identification: 6625-01-355-4087; Part Name Assigned by Controlling Agency: CIRCUIT CARD ASSEMBLY PREAMP; End Item Identification: 6625-01-355-4087. 4 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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