PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9998-4301-001Mounting Pad,electrical-Electron

Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems · NSN 5999-01-198-7072 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-198-7072 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-198-7072. Primary manufacturer part number: 9998-4301-001.
Features
  • Mounting Pad,electrical-Electron — FSC 5999
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: PLASTIC DIALLYL PHTHALATE
  • Unthreaded Mounting Hole Diameter: 0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Test Data Document: 58536-A-A-55485 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Overall Diameter: 0.255 INCHES NOMINAL IN
  • Color: NATURAL
  • Specification/standard Data: 58536-A-A-55485/3 GOVERNMENT SPECIFICATION
Applications
  • Applications requiring Plastic Diallyl Phthalate construction
General Description

The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-01-198-7072, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-198-7072
Primary Part Number9998-4301-001
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerUndersea Sensor Systems Inc Div Ultra Sonobuoy Systems
StatusCANCELLED
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialPLASTIC DIALLYL PHTHALATE
Unthreaded Mounting Hole Diameter0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Test Data Document58536-A-A-55485 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Overall Diameter0.255 INCHES NOMINAL IN
ColorNATURAL
Specification/standard Data58536-A-A-55485/3 GOVERNMENT SPECIFICATION
Body StyleDISK
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialPLASTIC DIALLYL PHTHALATE
Unthreaded Mounting Hole Diameter0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Test Data Document58536-A-A-55485 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Overall Diameter0.255 INCHES NOMINAL IN
ColorNATURAL
Specification/standard Data58536-A-A-55485/3 GOVERNMENT SPECIFICATION
Body StyleDISK
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-01-073-7147
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeZZ
Weight0.0100 lbs
Cube0.0005 cu ft
Verified Substitutes 12
Mounting Pad,electrical-Electron
6625-00-434-1087761328P57 SUCCESSOR
Rf Asy
Westinghouse Electric Corp
Circuit Card Assembly
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
5920-00-126-1873 INTERCHANGEABLE
Fuse,indicator Alarm
5999-01-064-5069 INTERCHANGEABLE
Mounting Pad,electrical-Electron
4820-01-076-9493401015 INTERCHANGEABLE
Valve,check
Sloan Transportation Products Div of Bld Products Ltd
4730-01-096-1350401-015 INTERCHANGEABLE
Tee,pipe
George Fischer Sloane, Inc.
Cross-Reference Index
Part NumberManufacturer
9998-4301-001 Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA)
3005 Teknational Thermal Insulation and Hardware, Inc (USA)
808361-1 Raytheon Company Dba Raytheon (USA)
401015 Ail Systems Inc Sub of Eaton Corp (USA)
MIL-M-38527/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527/03-016 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-55485/03 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-55485/03-016D Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
10139599 Nimikkeistokeskus Ncb Finland (FIN)
M38527/03-016D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-55485/3 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
SUCCESSOR 5999-01-073-7147 Mounting Pad,electrical-Electron
5999-00-105-3357SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
6625-00-434-1087SUCCESSOR
RF ASY
761328P57
5998-01-035-2590SUCCESSOR
CIRCUIT CARD ASSEMBLY
5999-01-431-5815SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-451-0600SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5920-00-126-1873INTERCHANGEABLE
FUSE,INDICATOR ALARM
5999-01-064-5069INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
4820-01-076-9493INTERCHANGEABLE
VALVE,CHECK
401015
4730-01-096-1350INTERCHANGEABLE
TEE,PIPE
401-015
5310-01-101-1294INTERCHANGEABLE
NUT,THRUST
5999-01-198-7066INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON

Frequently Asked Questions

What is NSN 5999-01-198-7072?

NSN 5999-01-198-7072 is a Mounting Pad,electrical-Electron, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-198-7072?

NSN 5999-01-198-7072 has 11 cross-referenced part numbers: 9998-4301-001 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems), 3005 (Teknational Thermal Insulation and Hardware, Inc), 808361-1 (Raytheon Company Dba Raytheon), 401015 (Ail Systems Inc Sub of Eaton Corp), MIL-M-38527/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.

What NSN replaces 5999-01-198-7072?

There are 12 known substitutes for 5999-01-198-7072: 5999-00-105-3357, 6625-00-434-1087, 5998-01-035-2590 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9998-4301-001?

Key specifications for 9998-4301-001: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Material: PLASTIC DIALLYL PHTHALATE; Unthreaded Mounting Hole Diameter: 0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Test Data Document: 58536-A-A-55485 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-198-7072 still in active supply?

NSN 5999-01-198-7072 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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