PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

587AS140-1Transformer,power

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 5950-00-203-3955 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-203-3955 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-203-3955. Primary manufacturer part number: 587AS140-1.
Features
  • Transformer,power — FSC 5950
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inclosure Type: OPEN
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Terminal Type and Quantity: 4 TAB, SOLDER LUG
  • Frequency Rating: 400.0 HERTZ NOMINAL 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 5950-00-203-3955, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 18 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-203-3955
Primary Part Number587AS140-1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Mounting Facility Quantity4 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeOPEN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Terminal Type and Quantity4 TAB, SOLDER LUG
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Height2.500 INCHES MAXIMUM IN
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Mounting Hole Diameter0.190 INCHES NOMINAL SINGLE GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage50.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Length3.500 INCHES NOMINAL IN
Winding Operating Voltage50.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Body Width3.000 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5920-00-156-0837143M INTERCHANGEABLE
Fuse,indicator Alarm
Reliance Comm/tec Corp Lorain Products Div
5962-00-484-7803170-17 INTERCHANGEABLE
Microcircuit,linear
Burr-Brown Corp
5310-00-769-65217696521 INTERCHANGEABLE
Washer,key
U S Army Tank Automotive Command Amsta-Im-Mm
4820-00-872-1200 INTERCHANGEABLE
Valve,regulating,fluid Pressure
1005-00-999-8815 INTERCHANGEABLE
Ejector,cartridge
5360-01-155-719317017 INTERCHANGEABLE
Spring
Hardware Products Co Inc
4220-01-169-4517520-117 INTERCHANGEABLE
Yoke,urethane
Kirby Morgan Dive Systems Inc
5355-01-188-459617017 INTERCHANGEABLE
Knob
Sypris Electronics, Llc Dba Sypris Electronics Llc
5910-01-224-748617017 INTERCHANGEABLE
Capacitor
Basler Electric Co
6520-01-277-378117017 INTERCHANGEABLE
File,pulp Canal,dental
Kerr Corporation
Cross-Reference Index
Part NumberManufacturer
17017 Nwl, Inc. (USA)
587AS140-1 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
5920-00-156-0837INTERCHANGEABLE
FUSE,INDICATOR ALARM
143M
5962-00-484-7803INTERCHANGEABLE
MICROCIRCUIT,LINEAR
170-17
5310-00-769-6521INTERCHANGEABLE
WASHER,KEY
7696521
4820-00-872-1200INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
1005-00-999-8815INTERCHANGEABLE
EJECTOR,CARTRIDGE
5360-01-155-7193INTERCHANGEABLE
SPRING
17017
4220-01-169-4517INTERCHANGEABLE
YOKE,URETHANE
520-117
5355-01-188-4596INTERCHANGEABLE
KNOB
17017
5910-01-224-7486INTERCHANGEABLE
CAPACITOR
17017
6520-01-277-3781INTERCHANGEABLE
FILE,PULP CANAL,DENTAL
17017
2825-01-305-3961INTERCHANGEABLE
DIAPHRAGM,TURBINE,STEAM
17017

Frequently Asked Questions

What is NSN 5950-00-203-3955?

NSN 5950-00-203-3955 is a Transformer,power, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-203-3955?

NSN 5950-00-203-3955 has 2 cross-referenced part numbers: 17017 (Nwl, Inc.), 587AS140-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 5950-00-203-3955?

There are 11 known substitutes for 5950-00-203-3955: 5920-00-156-0837, 5962-00-484-7803, 5310-00-769-6521 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 587AS140-1?

Key specifications for 587AS140-1: Mounting Facility Quantity: 4 SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Inclosure Type: OPEN. 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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