PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3320-257Transformer,audio Frequency

Cmc Electronics Inc · NSN 5950-00-079-1714 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-079-1714 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-079-1714. Primary manufacturer part number: 3320-257.
Features
  • Transformer,audio Frequency — FSC 5950
  • Body Height: 1.812 INCHES MAXIMUM IN
  • Body Length: 1.250 INCHES MAXIMUM IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Impedance Rating in Ohms: 100000.0 MINIMUM SINGLE COMPONENT SINGLE SECONDARY
  • Body Width: 1.188 INCHES MAXIMUM IN
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 0.875 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 5950-00-079-1714, 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 Cmc Electronics Inc. Government technical data includes 18 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
NSN5950-00-079-1714
Primary Part Number3320-257
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerCmc Electronics Inc
StatusACTIVE
Body Height1.812 INCHES MAXIMUM IN
Body Length1.250 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Impedance Rating in Ohms100000.0 MINIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Width1.188 INCHES MAXIMUM IN
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width0.953 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Terminal Type and Quantity4 SOLDER STUD
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Transformer FunctionINPUT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeOPEN
Frequency Rating1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Impedance Rating in Ohms1200.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch40 SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5815-00-872-3489 INTERCHANGEABLE
Lever
5950-00-957-3013 INTERCHANGEABLE
Coil,radio Frequency
Cross-Reference Index
Part NumberManufacturer
P5220706 Cobelda Sa (BEL)
3320-257 PRIMARY Cmc Electronics Inc (CAN)
130-649 Cmc Electronics Inc (CAN)
Related Parts
5815-00-872-3489INTERCHANGEABLE
LEVER
5950-00-957-3013INTERCHANGEABLE
COIL,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 5950-00-079-1714?

NSN 5950-00-079-1714 is a Transformer,audio Frequency, manufactured by Cmc Electronics Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-079-1714?

NSN 5950-00-079-1714 has 3 cross-referenced part numbers: P5220706 (Cobelda Sa), 3320-257 (Cmc Electronics Inc), 130-649 (Cmc Electronics Inc).

What NSN replaces 5950-00-079-1714?

There are 2 known substitutes for 5950-00-079-1714: 5815-00-872-3489, 5950-00-957-3013. Verify interchangeability with system specifications before substitution.

What are the specifications of 3320-257?

Key specifications for 3320-257: Body Height: 1.812 INCHES MAXIMUM IN; Body Length: 1.250 INCHES MAXIMUM IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Impedance Rating in Ohms: 100000.0 MINIMUM SINGLE COMPONENT SINGLE SECONDARY. 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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