PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20057Transformer,power

Coiltron Inc Div Coiltron · NSN 5950-01-248-5947 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-248-5947 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-248-5947. Primary manufacturer part number: 20057.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Current: 20.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Maximum Operating Temp: 155.0 CELSIUS DEGC
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE 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 5950-01-248-5947, 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 Coiltron Inc Div Coiltron. Government technical data includes 23 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-248-5947
Primary Part Number20057
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerCoiltron Inc Div Coiltron
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Current20.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Maximum Operating Temp155.0 CELSIUS DEGC
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current235.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Power Rating27.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity6 TURRET
Winding Operating Voltage92.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Power Rating25.0 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY
Inclosure TypeFULLY INCLOSED
Winding Power Rating1.84 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Maximum Transformer Power Rating27.0 VOLT-AMPERE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length1.344 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.188 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current5.0 AMPERES AC NOMINAL SINGLE COMPONENT SECOND SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2540-00-123-7216B-2001 INTERCHANGEABLE
Chamber Assembly
Dcm Manufacturing, Inc.
5133-00-228-1344 INTERCHANGEABLE
Drill,twist
4730-00-274-920920057 INTERCHANGEABLE
Packing Nut
Northrop Grumman Systems Corporation Div Marine Systems
3120-00-358-225820057 INTERCHANGEABLE
Bearing,sleeve
Brinkley Technology Group Llc Dba Hercules Manufacturing
4320-00-602-059720057 INTERCHANGEABLE
Pump,reciprocating
Hydro-Aire Aerospace Corp
1660-00-617-700420057 INTERCHANGEABLE
Plate,thrust
Avox Systems Inc Dba Avox Systems Inc
6610-00-667-6832101860 INTERCHANGEABLE
Spacer,dial Locator
Astronautics Corporation of America
2520-00-862-709020057 INTERCHANGEABLE
Parts Kit,universal Joint
Trw Inc Trw Intl Trade Government Sales Dept
6605-00-880-134310-1860 INTERCHANGEABLE
Indicator,course
L3 Technologies, Inc.
5950-01-019-5341989113-27C INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
20057 Coiltron Inc Div Coiltron (USA)
101860 Dbp Microwave Inc. Dba Dbp Microwave Inc. (USA)
7136812-1 Litton Systems Inc Guidance and Control Systems Div (USA)
Related Parts
2540-00-123-7216INTERCHANGEABLE
CHAMBER ASSEMBLY
B-2001
5133-00-228-1344INTERCHANGEABLE
DRILL,TWIST
4730-00-274-9209INTERCHANGEABLE
PACKING NUT
20057
3120-00-358-2258INTERCHANGEABLE
BEARING,SLEEVE
20057
4320-00-602-0597INTERCHANGEABLE
PUMP,RECIPROCATING
20057
1660-00-617-7004INTERCHANGEABLE
PLATE,THRUST
20057
6610-00-667-6832INTERCHANGEABLE
SPACER,DIAL LOCATOR
101860
2520-00-862-7090INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
20057
6605-00-880-1343INTERCHANGEABLE
INDICATOR,COURSE
10-1860
5950-01-019-5341INTERCHANGEABLE
COIL,RADIO FREQUENCY
989113-27C
2540-01-023-0172INTERCHANGEABLE
SHAFT AND PIVOT ASSEMBLY
AT58147
5950-01-030-4045INTERCHANGEABLE
REACTOR
240-2725-010

Frequently Asked Questions

What is NSN 5950-01-248-5947?

NSN 5950-01-248-5947 is a Transformer,power, manufactured by Coiltron Inc Div Coiltron, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-248-5947?

NSN 5950-01-248-5947 has 3 cross-referenced part numbers: 20057 (Coiltron Inc Div Coiltron), 101860 (Dbp Microwave Inc. Dba Dbp Microwave Inc.), 7136812-1 (Litton Systems Inc Guidance and Control Systems Div).

What NSN replaces 5950-01-248-5947?

There are 12 known substitutes for 5950-01-248-5947: 2540-00-123-7216, 5133-00-228-1344, 4730-00-274-9209 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20057?

Key specifications for 20057: Reliability Indicator: NOT ESTABLISHED; Overall Length: 1.800 INCHES NOMINAL IN; Winding Operating Current: 20.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY; Overall Height: 1.900 INCHES MAXIMUM IN. 26 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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