PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51431Circuit Card Assembly

Espey Mfg. & Electronics Corp. · NSN 5998-00-421-5840 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-00-421-5840 — this item is cataloged by the U.S. Government under National Stock Number 5998-00-421-5840. Primary manufacturer part number: 51431.
Features
  • Circuit Card Assembly — FSC 5998
  • Criticality Code Justification: CBBL
  • Features Provided: ELECTROSTATIC SENSITIVE
  • Criticality Code Justification: CBBL
  • Features Provided: ELECTROSTATIC SENSITIVE
  • 2 verified cross-references
  • Primary manufacturer: Espey Mfg. & Electronics Corp.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-00-421-5840, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Espey Mfg. & Electronics Corp.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5998-00-421-5840
Primary Part Number51431
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerEspey Mfg. & Electronics Corp.
StatusACTIVE
Criticality Code JustificationCBBL
Features ProvidedELECTROSTATIC SENSITIVE
Criticality Code JustificationCBBL
Features ProvidedELECTROSTATIC SENSITIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeT
Unit of IssueEA
SMR CodeCT
Weight0.5000 lbs
Cube0.1344 cu ft
Verified Substitutes 11
5136-00-156-3038 INTERCHANGEABLE
Chasers,thread Cutting
5210-00-243-3358C374-24 INTERCHANGEABLE
Rule,shrinkage
L.s. Starrett Company (the) Div Tool Division
5342-00-318-163451431 INTERCHANGEABLE
Bracket
Ambac International Corporation Div Ambac International
2815-00-362-17469167Y INTERCHANGEABLE
Valve,poppet,engine
Cummins Inc.
5330-00-368-487351-43-1 INTERCHANGEABLE
Packing Material
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
5935-00-557-2134534448-2 INTERCHANGEABLE
Connector,plug,electrical
Raytheon Company Dba Raytheon
2510-00-734-81657348165 INTERCHANGEABLE
Carrier Asy
U S Army Tank Automotive Command Amsta-Im-Mm
6210-00-829-268651-0431-300 INTERCHANGEABLE
Lens,light
Dialight Corporation
4030-01-361-27085-14-31 INTERCHANGEABLE
Stake,guy
Edgewood Chemical Biological Center Ecbc
5985-01-598-07495-14-31 INTERCHANGEABLE
Attenuator,fixed
Nvision Industries, Inc. Dba Weinschel Associates Div Weinschel Associates
Cross-Reference Index
Part NumberManufacturer
51431 Espey Mfg. & Electronics Corp. (USA)
51431 Espey Mfg and Electronics Corp (USA)
Related Parts
5136-00-156-3038INTERCHANGEABLE
CHASERS,THREAD CUTTING
5210-00-243-3358INTERCHANGEABLE
RULE,SHRINKAGE
C374-24
5342-00-318-1634INTERCHANGEABLE
BRACKET
51431
2815-00-362-1746INTERCHANGEABLE
VALVE,POPPET,ENGINE
9167Y
5330-00-368-4873INTERCHANGEABLE
PACKING MATERIAL
51-43-1
5935-00-557-2134INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
534448-2
2510-00-734-8165INTERCHANGEABLE
CARRIER ASY
7348165
6210-00-829-2686INTERCHANGEABLE
LENS,LIGHT
51-0431-300
4030-01-361-2708INTERCHANGEABLE
STAKE,GUY
5-14-31
5985-01-598-0749INTERCHANGEABLE
ATTENUATOR,FIXED
5-14-31
5310-01-620-9810INTERCHANGEABLE
NUT BLANK
51431

Frequently Asked Questions

What is NSN 5998-00-421-5840?

NSN 5998-00-421-5840 is a Circuit Card Assembly, manufactured by Espey Mfg. & Electronics Corp., classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-00-421-5840?

NSN 5998-00-421-5840 has 2 cross-referenced part numbers: 51431 (Espey Mfg. & Electronics Corp.), 51431 (Espey Mfg and Electronics Corp).

What NSN replaces 5998-00-421-5840?

There are 11 known substitutes for 5998-00-421-5840: 5136-00-156-3038, 5210-00-243-3358, 5342-00-318-1634 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51431?

Key specifications for 51431: Criticality Code Justification: CBBL; End Item Identification: AN/APN-119 RADAR SET; Special Features: 19 CAPACITORS, 11 DIODES, 1 PWB, 51 RESISTORS, 15 TRANSISTORS; Overall Length: 6.120 INCHES NOMINAL IN. 12 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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