PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M27/197-07Transformer,audio Frequency

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5950-01-111-0158 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-111-0158 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-111-0158. Primary manufacturer part number: M27/197-07.
Features
  • Transformer,audio Frequency — FSC 5950
  • Impedance Rating in Ohms: 500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
  • Inclosure Type: HERMETICALLY SEALED
  • Frequency Rating: 40.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Function and Quantity: 2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Maximum Transformer Power Rating: 1.0 WATTS SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-111-0158, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5950-01-111-0158
Primary Part NumberM27/197-07
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Impedance Rating in Ohms500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Inclosure TypeHERMETICALLY SEALED
Frequency Rating40.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Winding Function and Quantity2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Maximum Transformer Power Rating1.0 WATTS SINGLE COMPONENT
Terminal Type and Quantity8 TAB, SOLDER LUG
Center to Center Distance Between Mounting Facilities Parallel to Width1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT ALL PRIMARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Hole Diameter0.144 INCHES NOMINAL SINGLE GROUP IN
Impedance Rating in Ohms2500.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
Specification/standard Data81349-MIL-T-27/197 GOVERNMENT SPECIFICATION
Test Data Document81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Body Length1.625 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Body Width1.625 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-01-102-7706 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-104-4413 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-104-4415 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-104-4443 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-104-7114 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-140-7127 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-146-7763 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-260-7498 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-262-0344 INTERCHANGEABLE
Transformer,audio Frequency
Cross-Reference Index
Part NumberManufacturer
M27/197-07 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-27/197 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5950-01-102-7706INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-104-4413INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-104-4415INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-104-4443INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-104-7114INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-140-7127INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-146-7763INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-260-7498INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-262-0344INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY

Frequently Asked Questions

What is NSN 5950-01-111-0158?

NSN 5950-01-111-0158 is a Transformer,audio Frequency, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-111-0158?

NSN 5950-01-111-0158 has 2 cross-referenced part numbers: M27/197-07 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-27/197 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5950-01-111-0158?

There are 9 known substitutes for 5950-01-111-0158: 5950-01-102-7706, 5950-01-104-4413, 5950-01-104-4415 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M27/197-07?

Key specifications for M27/197-07: Impedance Rating in Ohms: 500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY; Inclosure Type: HERMETICALLY SEALED; Frequency Rating: 40.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com