PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

558254Transformer,audio Frequency

Stewart-Warner Corporation · NSN 5950-00-178-8514 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-178-8514 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-178-8514. Primary manufacturer part number: 558254.
Features
  • Transformer,audio Frequency — FSC 5950
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Frequency Rating: 300.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Impedance Rating in Ohms: 500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
  • Maximum Transformer Power Rating: 3.0 WATTS SINGLE COMPONENT
  • Primary to Secondary Turn Ratio: 3.3 TO 1 SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-178-8514, 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 Stewart-Warner Corporation. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-178-8514
Primary Part Number558254
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerStewart-Warner Corporation
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Frequency Rating300.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Impedance Rating in Ohms500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Maximum Transformer Power Rating3.0 WATTS SINGLE COMPONENT
Primary to Secondary Turn Ratio3.3 TO 1 SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length1.891 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Body Height2.156 INCHES NOMINAL IN
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Body Width1.781 INCHES NOMINAL IN
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Current30.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity6 SOLDER STUD
Inclosure TypeFULLY INCLOSED
Winding Operating Current10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT ALL SECONDARY
Thread Quantity Per Inch32 SINGLE GROUP
Impedance Rating in Ohms5000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.313 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
1610-00-887-0223558254 INTERCHANGEABLE
Nut and Pin
Hamilton Sundstrand Corporation Dba Collins Aerospace
5950-01-256-8874 INTERCHANGEABLE
Transformer,power
Cross-Reference Index
Part NumberManufacturer
558254 PRIMARY Stewart-Warner Corporation (USA)
95G19 PRIMARY Aimtron Systems, Llc (USA)
564392 PRIMARY Stewart-Warner Corporation (USA)
Related Parts
1610-00-887-0223INTERCHANGEABLE
NUT AND PIN
558254
5950-01-256-8874INTERCHANGEABLE
TRANSFORMER,POWER

Frequently Asked Questions

What is NSN 5950-00-178-8514?

NSN 5950-00-178-8514 is a Transformer,audio Frequency, manufactured by Stewart-Warner Corporation, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-178-8514?

NSN 5950-00-178-8514 has 3 cross-referenced part numbers: 558254 (Stewart-Warner Corporation), 95G19 (Aimtron Systems, Llc), 564392 (Stewart-Warner Corporation).

What NSN replaces 5950-00-178-8514?

There are 2 known substitutes for 5950-00-178-8514: 1610-00-887-0223, 5950-01-256-8874. Verify interchangeability with system specifications before substitution.

What are the specifications of 558254?

Key specifications for 558254: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT; Frequency Rating: 300.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Impedance Rating in Ohms: 500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY. 22 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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