PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20690Transformer,power

Freed Transformer Co · NSN 5950-00-648-0260 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-648-0260 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-648-0260. Primary manufacturer part number: 20690.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Current: 1.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Frequency Rating: 55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Winding Operating Current: 100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Length: 3.375 INCHES NOMINAL IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.250 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,power, cataloged under National Stock Number 5950-00-648-0260, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-648-0260
Primary Part Number20690
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Winding Operating Current1.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Frequency Rating55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Current100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length3.375 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width3.125 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Current1.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Terminal Type and Quantity12 TAB, SOLDER LUG
Body Height4.000 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Winding Function and Quantity1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-033-2977 INTERCHANGEABLE
Setscrew
4210-00-177-863420-690 INTERCHANGEABLE
Adapter,hose,fire E
Kidde Technologies, Inc Div Kidde Aerospace and Defense
5133-00-189-9267 INTERCHANGEABLE
Drill,twist
4810-01-443-6719695680-9 INTERCHANGEABLE
Valve,linear,directional Control
Lockheed Martin Corp
6240-01-463-5943 INTERCHANGEABLE
Lamp,fluorescent
2920-01-501-7958N1232 INTERCHANGEABLE
Generator,engine Accessory
C E Niehoff & Co
3020-01-598-305620-690 INTERCHANGEABLE
Gear,spur
Natural Gas Solutions North America Llc Div Industrial Products Group
Cross-Reference Index
Part NumberManufacturer
20690 PRIMARY Freed Transformer Co (USA)
N1232 Princeton Tool Inc Div Paragon Precision (USA)
Related Parts
5305-00-033-2977INTERCHANGEABLE
SETSCREW
4210-00-177-8634INTERCHANGEABLE
ADAPTER,HOSE,FIRE E
20-690
5133-00-189-9267INTERCHANGEABLE
DRILL,TWIST
4810-01-443-6719INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
695680-9
6240-01-463-5943INTERCHANGEABLE
LAMP,FLUORESCENT
2920-01-501-7958INTERCHANGEABLE
GENERATOR,ENGINE ACCESSORY
N1232
3020-01-598-3056INTERCHANGEABLE
GEAR,SPUR
20-690

Frequently Asked Questions

What is NSN 5950-00-648-0260?

NSN 5950-00-648-0260 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-648-0260?

NSN 5950-00-648-0260 has 2 cross-referenced part numbers: 20690 (Freed Transformer Co), N1232 (Princeton Tool Inc Div Paragon Precision).

What NSN replaces 5950-00-648-0260?

There are 7 known substitutes for 5950-00-648-0260: 5305-00-033-2977, 4210-00-177-8634, 5133-00-189-9267 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20690?

Key specifications for 20690: Winding Operating Current: 1.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY; Frequency Rating: 55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT; Winding Operating Current: 100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 16 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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