PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550611Mounting Pad,electrical-Electron

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5999-00-159-8444 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-159-8444 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-159-8444. Primary manufacturer part number: 550611.
Features
  • Mounting Pad,electrical-Electron — FSC 5999
  • 1 verified cross-reference
  • Primary manufacturer: L3harris Technologies, Inc Div Space & Airborne Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-00-159-8444, 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 L3harris Technologies, Inc Div Space & Airborne Systems. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersL3harris Technologies, Inc Div Space & Airborne Systems (CAGE 24930)
Technical Specifications
ParameterValue
NSN5999-00-159-8444
Primary Part Number550611
Item NameMounting Pad,electrical-Electron
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeXN
Weight0.0200 lbs
Cube0.0020 cu ft
Verified Substitutes 2
5315-00-965-7102550611 INTERCHANGEABLE
Pin,straight,headless
Hamilton Sundstrand Corporation Dba Collins Aerospace
5999-01-209-0654 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
550611 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5315-00-965-7102INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
550611
5999-01-209-0654INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC

Frequently Asked Questions

What is NSN 5999-00-159-8444?

NSN 5999-00-159-8444 is a Mounting Pad,electrical-Electron, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-159-8444?

NSN 5999-00-159-8444 has 1 cross-referenced part number: 550611 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5999-00-159-8444?

There are 2 known substitutes for 5999-00-159-8444: 5315-00-965-7102, 5999-01-209-0654. Verify interchangeability with system specifications before substitution.

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