PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2921760Mounting Pad,electrical-Electron

Naval Sea Systems Command · NSN 5999-01-056-4087 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-056-4087 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-056-4087. Primary manufacturer part number: 2921760.
Features
  • Mounting Pad,electrical-Electron — FSC 5999
  • Body Style: DISK
  • Unthreaded Mounting Hole Diameter: 0.050 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Material: PLASTIC DIALLYL PHTHALATE
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Color: NATURAL
  • Overall Diameter: 0.340 INCHES NOMINAL IN
  • Body Style: DISK
Applications
  • Applications requiring Plastic Diallyl Phthalate construction
General Description

The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-01-056-4087, 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 Naval Sea Systems Command. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 9 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
NSN5999-01-056-4087
Primary Part Number2921760
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusCANCELLED
Body StyleDISK
Unthreaded Mounting Hole Diameter0.050 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
MaterialPLASTIC DIALLYL PHTHALATE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
ColorNATURAL
Overall Diameter0.340 INCHES NOMINAL IN
Body StyleDISK
Unthreaded Mounting Hole Diameter0.050 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
MaterialPLASTIC DIALLYL PHTHALATE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
ColorNATURAL
Overall Diameter0.340 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-00-864-9965
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeDZ
Weight0.2500 lbs
Cube0.0208 cu ft
Verified Substitutes 12
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Mounting Pad,electrical-Electron
Cross-Reference Index
Part NumberManufacturer
2921760 Naval Sea Systems Command (USA)
421-0359-001 The Boeing Company Div Legacy Boeing Hb1 (USA)
A-55485/02-010D Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-M-38527/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527/02-010 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527-04N Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10123N Ross Milton Co the (USA)
M38527/02-010N Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10129537 Nimikkeistokeskus Ncb Finland (FIN)
M38527-04D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M38527/02-010D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-55485 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-55485/2 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
7717-251DAP Thermalloy Co Inc (USA)
SPTP-1 Lightwedge, Llc Dba Great Point Light (USA)
SC1338-001 Standard Memories Corp (USA)
Related Parts
SUCCESSOR 5999-00-864-9965 Mounting Pad,electrical-Electron
5999-01-080-1971SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-198-7077SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-053-6295SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-068-2616SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-069-5036SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-072-8616SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-079-9220SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-080-5947SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-096-4110SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-198-4548SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-199-7475SUCCESSOR
MOUNTING PAD,ELECTRICAL-ELECTRON

Frequently Asked Questions

What is NSN 5999-01-056-4087?

NSN 5999-01-056-4087 is a Mounting Pad,electrical-Electron, manufactured by Naval Sea Systems Command, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-01-056-4087?

NSN 5999-01-056-4087 has 16 cross-referenced part numbers: 2921760 (Naval Sea Systems Command), 421-0359-001 (The Boeing Company Div Legacy Boeing Hb1), A-55485/02-010D (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MIL-M-38527/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M38527/02-010 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 11 more.

What NSN replaces 5999-01-056-4087?

There are 12 known substitutes for 5999-01-056-4087: 5999-01-080-1971, 5999-01-198-7077, 5999-00-864-9965 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2921760?

Key specifications for 2921760: Body Style: DISK; Overall Height: 0.075 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.050 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Material: PLASTIC DIALLYL PHTHALATE. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-056-4087 still in active supply?

NSN 5999-01-056-4087 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.
PartsTable Design LLC · partstable.com