PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

667-9521-00Transformer,audio Frequency

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5950-00-914-7751 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-914-7751 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-914-7751. Primary manufacturer part number: 667-9521-00.
Features
  • Transformer,audio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Inclosure Type: HERMETICALLY SEALED
  • Terminal Type and Quantity: 4 PIN
  • Body Width: 0.875 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 40 SINGLE GROUP
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Impedance Rating in Ohms: 600.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-914-7751, 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 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN5950-00-914-7751
Primary Part Number667-9521-00
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeHERMETICALLY SEALED
Terminal Type and Quantity4 PIN
Body Width0.875 INCHES NOMINAL IN
Thread Quantity Per Inch40 SINGLE GROUP
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current50.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Distance Between Mounting Facility Centers0.562 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity2 SINGLE GROUP
Frequency Rating300.0 HERTZ MINIMUM AND 22.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Length0.875 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Maximum Transformer Power Rating30.0 MILLIWATTS SINGLE COMPONENT
Body Height1.625 INCHES NOMINAL IN
Impedance Rating in Ohms100.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-196-1506A733S-124CFG INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
1650-01-226-733830957 INTERCHANGEABLE
Disk,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5915-01-237-2480110F083-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Frontgrade Technologies Inc. Dba Frontgrade Technologies Inc.
Cross-Reference Index
Part NumberManufacturer
30957 Emerson Electric Co White-Rodgers Div (USA)
BC3337 Ballastran Corp (USA)
667-9521-00 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
4730-00-196-1506INTERCHANGEABLE
NIPPLE,PIPE
A733S-124CFG
1650-01-226-7338INTERCHANGEABLE
DISK,VALVE
30957
5915-01-237-2480INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
110F083-1

Frequently Asked Questions

What is NSN 5950-00-914-7751?

NSN 5950-00-914-7751 is a Transformer,audio Frequency, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-914-7751?

NSN 5950-00-914-7751 has 3 cross-referenced part numbers: 30957 (Emerson Electric Co White-Rodgers Div), BC3337 (Ballastran Corp), 667-9521-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5950-00-914-7751?

There are 3 known substitutes for 5950-00-914-7751: 4730-00-196-1506, 1650-01-226-7338, 5915-01-237-2480. Verify interchangeability with system specifications before substitution.

What are the specifications of 667-9521-00?

Key specifications for 667-9521-00: Reliability Indicator: NOT ESTABLISHED; Inclosure Type: HERMETICALLY SEALED; Terminal Type and Quantity: 4 PIN; Body Width: 0.875 INCHES NOMINAL IN. 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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