PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

86-20Circuit Card Assembly

Symmetricom, Inc · NSN 5998-01-254-3404 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-254-3404 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-254-3404. Primary manufacturer part number: 86-20.
Features
  • Circuit Card Assembly — FSC 5998
  • Criticality Code Justification: CBBL
  • Features Provided: ELECTROSTATIC SENSITIVE
  • Criticality Code Justification: CBBL
  • Features Provided: ELECTROSTATIC SENSITIVE
  • 1 verified cross-reference
  • Primary manufacturer: Symmetricom, 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 5998-01-254-3404, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Symmetricom, Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-254-3404
Primary Part Number86-20
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerSymmetricom, Inc
StatusACTIVE
Criticality Code JustificationCBBL
Features ProvidedELECTROSTATIC SENSITIVE
Criticality Code JustificationCBBL
Features ProvidedELECTROSTATIC SENSITIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor7050-01-027-8507
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 12
Converter,digital to Analog
6145-01-153-71971064 SUCCESSOR
Cable,power,electrical
Belden, Inc.
6145-01-199-14198620 SUCCESSOR
Cable,power,electrical
Mercury Wire Products, Inc. Dba Mercury Wire Products Inc
5998-01-379-02978620 SUCCESSOR
Circuit Card Assembly
Meggitt Safety Systems Inc
6625-01-670-41138620 SUCCESSOR
Sensor,current
Pearson Electronics Inc
6625-01-714-24948620 SUCCESSOR
Test Set Subassembly,electrical
B&k Precision Corp Div B&k Precision Corporation
4510-00-031-7634520 INTERCHANGEABLE
Faucet,double
Delta Faucet Co
5330-00-074-26008620 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5977-00-167-9226 INTERCHANGEABLE
Brush,electrical Contact
5975-00-660-5809 INTERCHANGEABLE
Coupling,electrical Conduit
Cross-Reference Index
Part NumberManufacturer
86-20 Symmetricom, Inc (USA)
Related Parts
SUCCESSOR 7050-01-027-8507 Converter,digital to Analog
6145-01-153-7197SUCCESSOR
CABLE,POWER,ELECTRICAL
1064
6145-01-199-1419SUCCESSOR
CABLE,POWER,ELECTRICAL
8620
5998-01-379-0297SUCCESSOR
CIRCUIT CARD ASSEMBLY
8620
6625-01-670-4113SUCCESSOR
SENSOR,CURRENT
8620
6625-01-714-2494SUCCESSOR
TEST SET SUBASSEMBLY,ELECTRICAL
8620
4510-00-031-7634INTERCHANGEABLE
FAUCET,DOUBLE
520
5330-00-074-2600INTERCHANGEABLE
SEAL,PLAIN ENCASED
8620
5977-00-167-9226INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
5975-00-660-5809INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
5120-01-112-2925INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
5930-01-177-2847INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL

Frequently Asked Questions

What is NSN 5998-01-254-3404?

NSN 5998-01-254-3404 is a Circuit Card Assembly, manufactured by Symmetricom, Inc, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-254-3404?

NSN 5998-01-254-3404 has 1 cross-referenced part number: 86-20 (Symmetricom, Inc).

What NSN replaces 5998-01-254-3404?

There are 12 known substitutes for 5998-01-254-3404: 7050-01-027-8507, 6145-01-153-7197, 6145-01-199-1419 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 86-20?

Key specifications for 86-20: End Item Identification: MARK IV TRANS/WET/TERM; Part Name Assigned by Controlling Agency: SYNCRO CLOCK; Special Features: PWB 1;MICRCT 26;RES 16;CAP 47;DIODE 4;TRANSFORMER 7;COIL 4;SWITCH 8; Criticality Code Justification: CBBL. 10 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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