PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18-643Transformer,power

L3harris Maritime Power & Energy Solutions, Inc · NSN 5950-01-168-4639 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-168-4639 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-168-4639. Primary manufacturer part number: 18-643.
Features
  • Transformer,power — FSC 5950
  • Mounting Slot Width: 0.313 INCHES NOMINAL SINGLE GROUP IN
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 5.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Method: SLOT SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • 2 verified cross-references
  • Primary manufacturer: L3harris Maritime Power & Energy Solutions, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-168-4639, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is L3harris Maritime Power & Energy Solutions, Inc. Government technical data includes 5 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-168-4639
Primary Part Number18-643
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerL3harris Maritime Power & Energy Solutions, Inc
StatusACTIVE
Mounting Slot Width0.313 INCHES NOMINAL SINGLE GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length5.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodSLOT SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5360-00-147-3745PM58 INTERCHANGEABLE
Spring,helical,compression
Wisconsin Motors, Llc
2530-00-148-1520163-41 INTERCHANGEABLE
Seal Kit,hydrostat
Hamilton Sundstrand Corporation
4810-00-226-253118643 INTERCHANGEABLE
Sleeve and Slide,directional Con
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5950-00-482-084218-643 INTERCHANGEABLE
Coil,radio Frequency
Albert Frei & Sons, Inc. Dba Afs
5330-01-091-92441864-3 INTERCHANGEABLE
Retainer,packing Backup
Tescom Corp Dba Tescom Div Tescom
4440-01-178-851318643 INTERCHANGEABLE
Separator,interstage
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
3020-01-205-877918643 INTERCHANGEABLE
Gear Rack
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
18-643 PRIMARY L3harris Maritime Power & Energy Solutions, Inc (USA)
62A85-B106 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5360-00-147-3745INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
PM58
2530-00-148-1520INTERCHANGEABLE
SEAL KIT,HYDROSTAT
163-41
4810-00-226-2531INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
18643
5950-00-482-0842INTERCHANGEABLE
COIL,RADIO FREQUENCY
18-643
5330-01-091-9244INTERCHANGEABLE
RETAINER,PACKING BACKUP
1864-3
4440-01-178-8513INTERCHANGEABLE
SEPARATOR,INTERSTAGE
18643
3020-01-205-8779INTERCHANGEABLE
GEAR RACK
18643

Frequently Asked Questions

What is NSN 5950-01-168-4639?

NSN 5950-01-168-4639 is a Transformer,power, manufactured by L3harris Maritime Power & Energy Solutions, Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-168-4639?

NSN 5950-01-168-4639 has 2 cross-referenced part numbers: 18-643 (L3harris Maritime Power & Energy Solutions, Inc), 62A85-B106 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5950-01-168-4639?

There are 7 known substitutes for 5950-01-168-4639: 5360-00-147-3745, 2530-00-148-1520, 4810-00-226-2531 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18-643?

Key specifications for 18-643: Mounting Slot Width: 0.313 INCHES NOMINAL SINGLE GROUP IN; Overall Width: 5.750 INCHES MAXIMUM IN; Mounting Facility Quantity: 4 SINGLE GROUP; Center to Center Distance Between Mounting Facilities Parallel to Length: 5.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 8 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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