PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

650998Transformer,audio Frequency

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5950-00-645-0762 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-0762 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-0762. Primary manufacturer part number: 650998.
Features
  • Transformer,audio Frequency — FSC 5950
  • Inclosure Type: FULLY INCLOSED
  • Reliability Indicator: NOT ESTABLISHED
  • Body Height: 2.938 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Primary to Secondary Turn Ratio: 1 TO 3-1/4 SINGLE COMPONENT
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY 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 5950-00-645-0762, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-0762
Primary Part Number650998
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusACTIVE
Inclosure TypeFULLY INCLOSED
Reliability IndicatorNOT ESTABLISHED
Body Height2.938 INCHES NOMINAL IN
Thread Quantity Per Inch32 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Primary to Secondary Turn Ratio1 TO 3-1/4 SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length2.750 INCHES NOMINAL IN
Maximum Transformer Power Rating25.0 DECIBELS SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current30.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity6 TAB, SOLDER LUG
Body Width2.188 INCHES NOMINAL IN
Frequency Rating60.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Impedance Rating in Ohms3900.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Impedance Rating in Ohms40000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-054-456254-31 INTERCHANGEABLE
Delay Line
Esc Control Electronics Llc Dba Control Electronics Division of Fil-Coil
3110-00-070-8281CF-3-S-2J INTERCHANGEABLE
Cam Follower,needle Bearing
Mcgill Manufacturing Co, Inc
5805-00-164-7064CF3 INTERCHANGEABLE
Repeater,telephone
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2810-00-386-44425042J3 INTERCHANGEABLE
Bushing,oil Sump to
Curtiss-Wright Controls, Inc. Div Actuation Division
7910-00-550-9111110776A INTERCHANGEABLE
Cleaner,vacuum,electric
Tiger-Vac Inc.
4820-00-606-8214B2010918 INTERCHANGEABLE
Valve,safety Relief
L3harris Technologies, Inc. Dba Harris Corporation
5945-00-973-414441DB30AG INTERCHANGEABLE
Relay,electromagnetic
Siemens Energy and Automation Inc Siemens Furnas Controls Div
5220-01-016-6398 INTERCHANGEABLE
Gage,special
5340-01-060-8993CF3 INTERCHANGEABLE
Clevis Assembly
Haldex Brake Products Corporation
2040-01-121-573313226E0179 INTERCHANGEABLE
Bar,tie,assembly
Cecom Lr Center
Cross-Reference Index
Part NumberManufacturer
5431 Ferranti Electric Inc (USA)
313201 Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
650998 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
CF3 Protran Co Inc (USA)
Related Parts
5999-00-054-4562INTERCHANGEABLE
DELAY LINE
54-31
3110-00-070-8281INTERCHANGEABLE
CAM FOLLOWER,NEEDLE BEARING
CF-3-S-2J
5805-00-164-7064INTERCHANGEABLE
REPEATER,TELEPHONE
CF3
2810-00-386-4442INTERCHANGEABLE
BUSHING,OIL SUMP TO
5042J3
7910-00-550-9111INTERCHANGEABLE
CLEANER,VACUUM,ELECTRIC
110776A
4820-00-606-8214INTERCHANGEABLE
VALVE,SAFETY RELIEF
B2010918
5945-00-973-4144INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
41DB30AG
5220-01-016-6398INTERCHANGEABLE
GAGE,SPECIAL
5340-01-060-8993INTERCHANGEABLE
CLEVIS ASSEMBLY
CF3
2040-01-121-5733INTERCHANGEABLE
BAR,TIE,ASSEMBLY
13226E0179
5315-01-191-7888INTERCHANGEABLE
PIN
5431
4320-01-241-6805INTERCHANGEABLE
ROTOR,PUMP
5431F

Frequently Asked Questions

What is NSN 5950-00-645-0762?

NSN 5950-00-645-0762 is a Transformer,audio Frequency, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-0762?

NSN 5950-00-645-0762 has 4 cross-referenced part numbers: 5431 (Ferranti Electric Inc), 313201 (Electronic Transformer Corp Div Electronic Transformer Corporation), 650998 (Lockheed Martin Corporation Div Rms - Mitchel Field), CF3 (Protran Co Inc).

What NSN replaces 5950-00-645-0762?

There are 12 known substitutes for 5950-00-645-0762: 5999-00-054-4562, 3110-00-070-8281, 5805-00-164-7064 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 650998?

Key specifications for 650998: Inclosure Type: FULLY INCLOSED; Reliability Indicator: NOT ESTABLISHED; Body Height: 2.938 INCHES NOMINAL IN; Thread Quantity Per Inch: 32 SINGLE GROUP. 20 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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