PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18157Transformer,power

Unitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems · NSN 5950-01-035-8864 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-035-8864 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-035-8864. Primary manufacturer part number: 18157.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Terminal Type and Quantity: 6 COLLAR/RING AND 3 EYELET
  • Body Length: 8.060 INCHES MAXIMUM IN
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Body Width: 3.250 INCHES MAXIMUM IN
  • Winding Power Rating: 7.5 KILOVOLT-AMPERES SINGLE COMPONENT ALL SECONDARY
  • Input-Output Phase Relationship: THREE PHASE TO THREE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-035-8864, 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 Unitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems. Government technical data includes 11 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-035-8864
Primary Part Number18157
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerUnitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems
StatusACTIVE
Winding Operating Voltage220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity6 COLLAR/RING AND 3 EYELET
Body Length8.060 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Body Width3.250 INCHES MAXIMUM IN
Winding Power Rating7.5 KILOVOLT-AMPERES SINGLE COMPONENT ALL SECONDARY
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Body Height6.750 INCHES MAXIMUM IN
Mounting MethodBRACKET(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-144-8663 INTERCHANGEABLE
Bearing,ball,annular
5305-00-207-786118157 INTERCHANGEABLE
Screw,cap,hexagon Head
Ge Aviation Systems Llc Dba Ge Aviation Div Information Systems - Germantown
5330-00-290-78591815700 INTERCHANGEABLE
Gasket
Purolator Facet Inc. Div Parker Aerospace Filtration Division Dba Purolator Facet, in
4820-00-495-6234810-4384536-73A INTERCHANGEABLE
Valve,angle
Naval Ship Systems Command
5306-00-510-4997 INTERCHANGEABLE
Bolt
5905-00-821-4212 INTERCHANGEABLE
Resistor Assembly
5945-00-938-5393 INTERCHANGEABLE
Solenoid,electrical
5305-01-470-6967NW31398 INTERCHANGEABLE
Screw,cap,hexagon Head
Tld Wollard Llc
5340-01-590-909018157 INTERCHANGEABLE
Standoff,threaded,spacing
Vicor Corp Dba Vicorpowercom
Cross-Reference Index
Part NumberManufacturer
18157 PRIMARY Unitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems (USA)
18157 Unitron Inc (USA)
Related Parts
3110-00-144-8663INTERCHANGEABLE
BEARING,BALL,ANNULAR
5305-00-207-7861INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
18157
5330-00-290-7859INTERCHANGEABLE
GASKET
1815700
4820-00-495-6234INTERCHANGEABLE
VALVE,ANGLE
810-4384536-73A
5306-00-510-4997INTERCHANGEABLE
BOLT
5905-00-821-4212INTERCHANGEABLE
RESISTOR ASSEMBLY
5945-00-938-5393INTERCHANGEABLE
SOLENOID,ELECTRICAL
5305-01-470-6967INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
NW31398
5340-01-590-9090INTERCHANGEABLE
STANDOFF,THREADED,SPACING
18157

Frequently Asked Questions

What is NSN 5950-01-035-8864?

NSN 5950-01-035-8864 is a Transformer,power, manufactured by Unitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-035-8864?

NSN 5950-01-035-8864 has 2 cross-referenced part numbers: 18157 (Unitron, Lp Dba Unitron Power Systems, Lp ; Atlas Marine Systems), 18157 (Unitron Inc).

What NSN replaces 5950-01-035-8864?

There are 9 known substitutes for 5950-01-035-8864: 3110-00-144-8663, 5305-00-207-7861, 5330-00-290-7859 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18157?

Key specifications for 18157: Winding Operating Voltage: 220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Terminal Type and Quantity: 6 COLLAR/RING AND 3 EYELET; Body Length: 8.060 INCHES MAXIMUM IN; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT. 11 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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