PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21F18Transformer,power

Thordarson Inc · NSN 5950-00-686-6230 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-686-6230 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-686-6230. Primary manufacturer part number: 21F18.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Power Rating: 50.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Body Width: 2.500 INCHES NOMINAL IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-686-6230, 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 Thordarson Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-686-6230
Primary Part Number21F18
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerThordarson Inc
StatusCANCELLED
Winding Operating Voltage117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Power Rating50.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Body Width2.500 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage10.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Terminal Type and Quantity5 WIRE LEAD
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length2.250 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Width1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current5.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Body Height3.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3439-00-363-3925HAS-015K INTERCHANGEABLE
Heating Unit,electric Soldering
Master Appliance Corporation Dba Master Appliance Corp
4730-00-793-2820B-300-8-2 INTERCHANGEABLE
Elbow,pipe to Tube
Swagelok Co
6210-00-847-540116-30082 INTERCHANGEABLE
Light,indicator
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
5340-00-847-753730-008-2 INTERCHANGEABLE
Cap,protective,dust and Moisture
Bell Textron Inc
5930-00-850-14303008-2 INTERCHANGEABLE
Switch Assembly
Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch
5935-00-941-3817N111 INTERCHANGEABLE
Jack,telephone
Switchcraft Inc.
5935-01-051-182180-48012-000 INTERCHANGEABLE
Connector,receptacle,electrical
Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector
5998-01-119-5013 INTERCHANGEABLE
Circuit Card Assembly
5905-01-157-9933 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5895-01-223-4569 INTERCHANGEABLE
Up Converter
Cross-Reference Index
Part NumberManufacturer
300-82 Spindler and Sauppe Inc (USA)
21F18 Components Corp of America (USA)
300-082 Spindler and Sauppe Inc (USA)
N1-11 Spindler and Sauppe Inc (USA)
21F18 PRIMARY Thordarson Inc (USA)
Related Parts
3439-00-363-3925INTERCHANGEABLE
HEATING UNIT,ELECTRIC SOLDERING
HAS-015K
4730-00-793-2820INTERCHANGEABLE
ELBOW,PIPE TO TUBE
B-300-8-2
6210-00-847-5401INTERCHANGEABLE
LIGHT,INDICATOR
16-30082
5340-00-847-7537INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
30-008-2
5930-00-850-1430INTERCHANGEABLE
SWITCH ASSEMBLY
3008-2
5935-00-941-3817INTERCHANGEABLE
JACK,TELEPHONE
N111
5935-01-051-1821INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
80-48012-000
5998-01-119-5013INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5905-01-157-9933INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5895-01-223-4569INTERCHANGEABLE
UP CONVERTER
1630-01-229-7617INTERCHANGEABLE
PISTON,BRAKE VALVE
30082
5330-01-278-9509INTERCHANGEABLE
GASKET
30082

Frequently Asked Questions

What is NSN 5950-00-686-6230?

NSN 5950-00-686-6230 is a Transformer,power, manufactured by Thordarson Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-686-6230?

NSN 5950-00-686-6230 has 5 cross-referenced part numbers: 300-82 (Spindler and Sauppe Inc), 21F18 (Components Corp of America), 300-082 (Spindler and Sauppe Inc), N1-11 (Spindler and Sauppe Inc), 21F18 (Thordarson Inc).

What NSN replaces 5950-00-686-6230?

There are 12 known substitutes for 5950-00-686-6230: 3439-00-363-3925, 4730-00-793-2820, 6210-00-847-5401 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21F18?

Key specifications for 21F18: Winding Operating Voltage: 117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Winding Power Rating: 50.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP; Body Width: 2.500 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-686-6230 still in active supply?

NSN 5950-00-686-6230 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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