PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17877Transformer,audio Frequency

Freed Transformer Co · NSN 5950-00-647-7668 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-7668 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-7668. Primary manufacturer part number: 17877.
Features
  • Transformer,audio Frequency — FSC 5950
  • Body Length: 1.875 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Height: 3.000 INCHES NOMINAL IN
  • Terminal Type and Quantity: 4 STANDOFF, SOLDER LUG
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Primary to Secondary Turn Ratio: 1 TO 4-1/2 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 5950-00-647-7668, 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 Freed Transformer Co. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-7668
Primary Part Number17877
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Body Length1.875 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Body Height3.000 INCHES NOMINAL IN
Terminal Type and Quantity4 STANDOFF, SOLDER LUG
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Primary to Secondary Turn Ratio1 TO 4-1/2 SINGLE COMPONENT
Impedance Rating in Ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.065 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Impedance Rating in Ohms500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.229 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current20.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Frequency Rating10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Width1.625 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-141-9741 INTERCHANGEABLE
Washer,flat
3455-00-227-9858INVOLUTE 11-6 2-3/8 INTERCHANGEABLE
Cutter,milling,involute Gear
F & D Tool Co Inc
9540-01-199-4601 INTERCHANGEABLE
Channel,structural
Cross-Reference Index
Part NumberManufacturer
17877 PRIMARY Freed Transformer Co (USA)
Related Parts
5310-00-141-9741INTERCHANGEABLE
WASHER,FLAT
3455-00-227-9858INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
INVOLUTE 11-6 2-3/8
9540-01-199-4601INTERCHANGEABLE
CHANNEL,STRUCTURAL

Frequently Asked Questions

What is NSN 5950-00-647-7668?

NSN 5950-00-647-7668 is a Transformer,audio Frequency, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-647-7668?

NSN 5950-00-647-7668 has 1 cross-referenced part number: 17877 (Freed Transformer Co).

What NSN replaces 5950-00-647-7668?

There are 3 known substitutes for 5950-00-647-7668: 5310-00-141-9741, 3455-00-227-9858, 9540-01-199-4601. Verify interchangeability with system specifications before substitution.

What are the specifications of 17877?

Key specifications for 17877: Body Length: 1.875 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Mounting Facility Quantity: 4 SINGLE GROUP; Body Height: 3.000 INCHES NOMINAL IN. 19 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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