PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9T31Y2931Transformer,power

General Electric Company · NSN 5950-00-648-2984 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-648-2984 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-648-2984. Primary manufacturer part number: 9T31Y2931.
Features
  • Transformer,power — FSC 5950
  • Body Height: 0.938 INCHES NOMINAL IN
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
  • Winding Operating Voltage: 2.75 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY
  • Body Outside Diameter: 0.938 INCHES NOMINAL IN
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Facility Quantity: 2 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-648-2984, 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 General Electric Company. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 9 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
NSN5950-00-648-2984
Primary Part Number9T31Y2931
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGeneral Electric Company
StatusCANCELLED
Body Height0.938 INCHES NOMINAL IN
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Winding Operating Voltage2.75 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY
Body Outside Diameter0.938 INCHES NOMINAL IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity2 SINGLE GROUP
Mounting MethodSLOT SINGLE GROUP
Terminal Type and Quantity8 STANDOFF, SOLDER LUG
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeHERMETICALLY SEALED
Distance Between Mounting Facility Centers1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-079-6940031-0019-0001 INTERCHANGEABLE
Connector,receptacle,electrical
Te Connectivity Corporation Dba Microdot Products
3110-00-100-0670663 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5342-00-489-3427M112-3 INTERCHANGEABLE
Mount,resilient,weapon System
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
5935-00-660-41273119 INTERCHANGEABLE
Connector,receptacle,electrical
Te Connectivity Corporation Dba Microdot Products
6625-00-668-9468 INTERCHANGEABLE
Resistor,decade
5950-00-977-28342281997REV1 INTERCHANGEABLE
Reactor
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-01-053-08583119 INTERCHANGEABLE
Washer
Walchem Corp
5940-01-107-56153888 INTERCHANGEABLE
Terminal Board
Dover Corp Groen Div
5315-01-197-62633119 INTERCHANGEABLE
Pin,straight,headed
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
5975-01-254-04203306M INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
9T31Y2931 General Electric Company (USA)
3119 Transformionics Inc (USA)
181B533P1 General Electric Company (USA)
M7759 United Transformer Corp Sub of Opt Industries Inc (USA)
181B583P1 General Electric Company (USA)
181B583 General Electric Company (USA)
M1123 Microtran Co Inc (USA)
9T31Y2931 General Electric Co Specialty Transformer Dept (USA)
181B583PT1 General Electric Company (USA)
W6007 Unisys Corp Systems Development (USA)
M7759 Cummins Inc. (USA)
181B533P1 Bae Systems Controls Inc. (USA)
181B583P1 General Dynamics Defense Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
Related Parts
5935-00-079-6940INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
031-0019-0001
3110-00-100-0670INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
663
5342-00-489-3427INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
M112-3
5935-00-660-4127INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
3119
6625-00-668-9468INTERCHANGEABLE
RESISTOR,DECADE
5950-00-977-2834INTERCHANGEABLE
REACTOR
2281997REV1
5310-01-053-0858INTERCHANGEABLE
WASHER
3119
5940-01-107-5615INTERCHANGEABLE
TERMINAL BOARD
3888
5315-01-197-6263INTERCHANGEABLE
PIN,STRAIGHT,HEADED
3119
5975-01-254-0420INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
3306M
2540-01-362-1157INTERCHANGEABLE
ARM,WINDSHIELD WIPER
5305-01-484-4781INTERCHANGEABLE
SCREW,MACHINE
3119

Frequently Asked Questions

What is NSN 5950-00-648-2984?

NSN 5950-00-648-2984 is a Transformer,power, manufactured by General Electric Company, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-648-2984?

NSN 5950-00-648-2984 has 13 cross-referenced part numbers: 9T31Y2931 (General Electric Company), 3119 (Transformionics Inc), 181B533P1 (General Electric Company), M7759 (United Transformer Corp Sub of Opt Industries Inc), 181B583P1 (General Electric Company) and 8 more.

What NSN replaces 5950-00-648-2984?

There are 12 known substitutes for 5950-00-648-2984: 5935-00-079-6940, 3110-00-100-0670, 5342-00-489-3427 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9T31Y2931?

Key specifications for 9T31Y2931: Body Height: 0.938 INCHES NOMINAL IN; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT; Winding Operating Voltage: 2.75 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY; Body Outside Diameter: 0.938 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-648-2984 still in active supply?

NSN 5950-00-648-2984 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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