PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1M131-1Transformer,power

Northrop Grumman Corp Electronic Systems Defensive System Div · NSN 5950-00-189-3100 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-189-3100 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-189-3100. Primary manufacturer part number: 1M131-1.
Features
  • Transformer,power — FSC 5950
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Inclosure Type: HERMETICALLY SEALED
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Body Length: 2.150 INCHES MAXIMUM IN
  • Winding Operating Voltage: 50.70 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Terminal Type and Quantity: 9 TAB, SOLDER LUG
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-189-3100, 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 Northrop Grumman Corp Electronic Systems Defensive System Div. Government technical data includes 20 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
NSN5950-00-189-3100
Primary Part Number1M131-1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Corp Electronic Systems Defensive System Div
StatusACTIVE
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeHERMETICALLY SEALED
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Body Length2.150 INCHES MAXIMUM IN
Winding Operating Voltage50.70 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Terminal Type and Quantity9 TAB, SOLDER LUG
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Body Height2.020 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width1.850 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.530 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage22.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2540-00-212-88761251-3 INTERCHANGEABLE
Motor,windshield Wiper,electric
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
5330-00-231-689912513 INTERCHANGEABLE
Ring,wiper
Kalmar Solutions Ab
5330-00-292-049210206 INTERCHANGEABLE
Seal,plain Encased
Garwood/feller Inc Garwood Winch Div
3040-00-425-355212513 INTERCHANGEABLE
Shaft,shouldered
Garwood/feller Inc Garwood Winch Div
5365-00-786-402512513 INTERCHANGEABLE
Bushing,nonmetallic
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
2040-00-949-842712513 INTERCHANGEABLE
Head Skeleton Assem
L3 Technologies, Inc. Div L3 Keo
3020-00-999-2800610-480 INTERCHANGEABLE
Gear,worm
Roller Bearing Co of America, Inc Div Pic Design
5935-01-038-6458ST5M1348TS3B INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
6515-01-105-4645 INTERCHANGEABLE
Bone Plate
1560-01-263-9830 INTERCHANGEABLE
Frame
Cross-Reference Index
Part NumberManufacturer
12513 Magnespec Inc (USA)
12513 Bell Industries Inc J W Miller Magnetics Div (USA)
1M131-1 PRIMARY Northrop Grumman Corp Electronic Systems Defensive System Div (USA)
Related Parts
2540-00-212-8876INTERCHANGEABLE
MOTOR,WINDSHIELD WIPER,ELECTRIC
1251-3
5330-00-231-6899INTERCHANGEABLE
RING,WIPER
12513
5330-00-292-0492INTERCHANGEABLE
SEAL,PLAIN ENCASED
10206
3040-00-425-3552INTERCHANGEABLE
SHAFT,SHOULDERED
12513
5365-00-786-4025INTERCHANGEABLE
BUSHING,NONMETALLIC
12513
2040-00-949-8427INTERCHANGEABLE
HEAD SKELETON ASSEM
12513
3020-00-999-2800INTERCHANGEABLE
GEAR,WORM
610-480
5935-01-038-6458INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1348TS3B
6515-01-105-4645INTERCHANGEABLE
BONE PLATE
1560-01-263-9830INTERCHANGEABLE
FRAME
5110-01-434-9555INTERCHANGEABLE
FILE,HAND
7045-01-437-9824INTERCHANGEABLE
DISK,FLEXIBLE

Frequently Asked Questions

What is NSN 5950-00-189-3100?

NSN 5950-00-189-3100 is a Transformer,power, manufactured by Northrop Grumman Corp Electronic Systems Defensive System Div, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-189-3100?

NSN 5950-00-189-3100 has 3 cross-referenced part numbers: 12513 (Magnespec Inc), 12513 (Bell Industries Inc J W Miller Magnetics Div), 1M131-1 (Northrop Grumman Corp Electronic Systems Defensive System Div).

What NSN replaces 5950-00-189-3100?

There are 12 known substitutes for 5950-00-189-3100: 2540-00-212-8876, 5330-00-231-6899, 5330-00-292-0492 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1M131-1?

Key specifications for 1M131-1: Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Inclosure Type: HERMETICALLY SEALED; Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Body Length: 2.150 INCHES MAXIMUM IN. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com