PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E-42Transformer,power

B G Laboratories Inc. · NSN 5950-01-032-1904 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-032-1904 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-032-1904. Primary manufacturer part number: E-42.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Current: 85.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Body Height: 0.800 INCHES MAXIMUM IN
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 26.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Thread Quantity Per Inch: 40 SINGLE GROUP
  • Winding Operating Current: 100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-032-1904, 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 B G Laboratories Inc.. Government technical data includes 23 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-032-1904
Primary Part NumberE-42
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerB G Laboratories Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Current85.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Body Height0.800 INCHES MAXIMUM IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage26.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Thread Quantity Per Inch40 SINGLE GROUP
Winding Operating Current100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Body Length1.200 INCHES MAXIMUM IN
Terminal Type and Quantity9 WIRE LEAD
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Winding Operating Voltage1.00 AC VOLTS NOMINAL AND 15.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Current5.0 MICROAMPERES AC MAXIMUM AND 8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Body Width1.100 INCHES MAXIMUM IN
Winding Operating Current260.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage26.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Facility Quantity2 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Distance Between Mounting Facility Centers0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-070-0184 INTERCHANGEABLE
Bearing,ball,annular
6135-00-125-5265 INTERCHANGEABLE
Battery,nonrechargeable
5120-00-264-5216 INTERCHANGEABLE
Wrench,box
9905-00-584-6326404366 INTERCHANGEABLE
Plate,identification
Woodward, Inc. Div Fuel Systems and Controls
5999-01-017-5343E-42 INTERCHANGEABLE
Heater,thermal Release
Siemens Energy and Automation Inc Siemens Furnas Controls Div
6110-01-227-2551 INTERCHANGEABLE
Switchboard,generat
3110-01-272-7346 INTERCHANGEABLE
Bearing,ball,annular
5330-01-641-7639404366ITEM9 INTERCHANGEABLE
Gasket
Comsaco, Llc Dba Comsaco Inc
5330-01-641-7642404366ITEM7 INTERCHANGEABLE
Gasket
Comsaco, Llc Dba Comsaco Inc
5330-01-641-7647404366ITEM10 INTERCHANGEABLE
Gasket
Comsaco, Llc Dba Comsaco Inc
Cross-Reference Index
Part NumberManufacturer
404366 Transicoil Llc Dba Ads Transicoil Div Transicoil (USA)
E-42 PRIMARY B G Laboratories Inc. (USA)
Related Parts
3110-00-070-0184INTERCHANGEABLE
BEARING,BALL,ANNULAR
6135-00-125-5265INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5120-00-264-5216INTERCHANGEABLE
WRENCH,BOX
9905-00-584-6326INTERCHANGEABLE
PLATE,IDENTIFICATION
404366
5999-01-017-5343INTERCHANGEABLE
HEATER,THERMAL RELEASE
E-42
6110-01-227-2551INTERCHANGEABLE
SWITCHBOARD,GENERAT
3110-01-272-7346INTERCHANGEABLE
BEARING,BALL,ANNULAR
5330-01-641-7639INTERCHANGEABLE
GASKET
404366ITEM9
5330-01-641-7642INTERCHANGEABLE
GASKET
404366ITEM7
5330-01-641-7647INTERCHANGEABLE
GASKET
404366ITEM10
5330-01-641-7650INTERCHANGEABLE
GASKET
404366-4
5330-01-642-2239INTERCHANGEABLE
GASKET
404366-7

Frequently Asked Questions

What is NSN 5950-01-032-1904?

NSN 5950-01-032-1904 is a Transformer,power, manufactured by B G Laboratories Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-032-1904?

NSN 5950-01-032-1904 has 2 cross-referenced part numbers: 404366 (Transicoil Llc Dba Ads Transicoil Div Transicoil), E-42 (B G Laboratories Inc.).

What NSN replaces 5950-01-032-1904?

There are 12 known substitutes for 5950-01-032-1904: 3110-00-070-0184, 6135-00-125-5265, 5120-00-264-5216 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of E-42?

Key specifications for E-42: Reliability Indicator: NOT ESTABLISHED; Winding Operating Current: 85.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Body Height: 0.800 INCHES MAXIMUM IN; Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. 23 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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