PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-55485/4Mounting Pad,electrical-Electron

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 5999-01-145-8757 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-145-8757 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-145-8757. Primary manufacturer part number: A-A-55485/4.
Features
  • Mounting Pad,electrical-Electron — FSC 5999
  • Overall Diameter: 0.500 INCHES NOMINAL 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.).
  • Unthreaded Mounting Hole Diameter: 0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Specification/standard Data: 58536-A-A-55485/4 GOVERNMENT SPECIFICATION
  • Mounting Facility Type and Quantity: 8 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Color: NATURAL
  • Body Style: DISK
Applications
  • Applications requiring Plastic Diallyl Phthalate construction
General Description

The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-01-145-8757, 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 Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, 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
NSN5999-01-145-8757
Primary Part NumberA-A-55485/4
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Overall Diameter0.500 INCHES NOMINAL 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.).
Unthreaded Mounting Hole Diameter0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Specification/standard Data58536-A-A-55485/4 GOVERNMENT SPECIFICATION
Mounting Facility Type and Quantity8 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
ColorNATURAL
Body StyleDISK
MaterialPLASTIC DIALLYL PHTHALATE
Overall Diameter0.500 INCHES NOMINAL 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.).
Unthreaded Mounting Hole Diameter0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Specification/standard Data58536-A-A-55485/4 GOVERNMENT SPECIFICATION
Mounting Facility Type and Quantity8 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
ColorNATURAL
Body StyleDISK
MaterialPLASTIC DIALLYL PHTHALATE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5999-01-029-6665
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.1200 lbs
Cube0.0041 cu ft
Verified Substitutes 12
Mounting Pad,electrical-Electron
5999-00-308-6517 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5999-01-026-5319 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5970-01-071-3395 INTERCHANGEABLE
Insulator,bushing
5999-01-080-5947 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5970-01-098-8564 INTERCHANGEABLE
Insulator,washer
5999-01-240-1382 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5999-01-338-0995 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5999-01-338-0996 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5999-01-355-5732 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Cross-Reference Index
Part NumberManufacturer
A-A-55485/4 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
M38527/04-001D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527-8D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-55485/04-001D Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-M-38527 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527/4-01D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5999-01-029-6665 Mounting Pad,electrical-Electron
5999-00-308-6517INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-026-5319INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5970-01-071-3395INTERCHANGEABLE
INSULATOR,BUSHING
5999-01-080-5947INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5970-01-098-8564INTERCHANGEABLE
INSULATOR,WASHER
5999-01-240-1382INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-338-0995INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-338-0996INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-355-5732INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-368-2576INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-368-5099INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON

Frequently Asked Questions

What is NSN 5999-01-145-8757?

NSN 5999-01-145-8757 is a Mounting Pad,electrical-Electron, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-145-8757?

NSN 5999-01-145-8757 has 6 cross-referenced part numbers: A-A-55485/4 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), M38527/04-001D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M38527-8D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), A-55485/04-001D (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MIL-M-38527 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5999-01-145-8757?

There are 12 known substitutes for 5999-01-145-8757: 5999-01-029-6665, 5999-00-308-6517, 5999-01-026-5319 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-55485/4?

Key specifications for A-A-55485/4: Overall Diameter: 0.500 INCHES NOMINAL 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.).; Unthreaded Mounting Hole Diameter: 0.025 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Specification/standard Data: 58536-A-A-55485/4 GOVERNMENT SPECIFICATION. 18 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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