PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M27/173-13Transformer,audio Frequency

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5950-01-155-3787 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-155-3787 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-155-3787. Primary manufacturer part number: M27/173-13.
Features
  • Transformer,audio Frequency — FSC 5950
  • Body Height: 0.260 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Maximum Transformer Power Rating: 1.0 MILLIWATTS SINGLE COMPONENT
  • Mounting Method: TERMINAL SINGLE GROUP
  • Inclosure Type: FULLY INCLOSED
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Frequency Rating: 300.0 HERTZ MINIMUM AND 250.0 KILOHERTZ MAXIMUM 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 5950-01-155-3787, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-155-3787
Primary Part NumberM27/173-13
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
StatusCANCELLED
Body Height0.260 INCHES NOMINAL IN
Impedance Rating in Ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Maximum Transformer Power Rating1.0 MILLIWATTS SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Frequency Rating300.0 HERTZ MINIMUM AND 250.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Specification/standard Data81349-MIL-T-27/173 GOVERNMENT SPECIFICATION
Body Width0.260 INCHES NOMINAL IN
Impedance Rating in Ohms2500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Terminal Type and Quantity7 WIRE LEAD
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 Length0.260 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5950-01-128-9950 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-146-7760 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-158-1334 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-187-1713 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-259-8499 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-264-1859 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-265-1675 INTERCHANGEABLE
Transformer,audio Frequency
Cross-Reference Index
Part NumberManufacturer
M27/173-13 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-27/173 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-27/173 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5950-01-128-9950INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-146-7760INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-158-1334INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-187-1713INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-259-8499INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-264-1859INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-265-1675INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY

Frequently Asked Questions

What is NSN 5950-01-155-3787?

NSN 5950-01-155-3787 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: cancelled.

What are the part numbers for NSN 5950-01-155-3787?

NSN 5950-01-155-3787 has 3 cross-referenced part numbers: M27/173-13 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-27/173 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-27/173 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5950-01-155-3787?

There are 7 known substitutes for 5950-01-155-3787: 5950-01-128-9950, 5950-01-146-7760, 5950-01-158-1334 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M27/173-13?

Key specifications for M27/173-13: Body Height: 0.260 INCHES NOMINAL IN; Impedance Rating in Ohms: 10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Maximum Transformer Power Rating: 1.0 MILLIWATTS SINGLE COMPONENT; Mounting Method: TERMINAL SINGLE GROUP. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-155-3787 still in active supply?

NSN 5950-01-155-3787 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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