PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12803Transformer,power

Robert M. Hadley Company, Inc. · NSN 5950-00-806-9308 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-806-9308 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-806-9308. Primary manufacturer part number: 12803.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Width: 1.937 INCHES NOMINAL IN
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) 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 5950-00-806-9308, 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 Robert M. Hadley Company, Inc.. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-806-9308
Primary Part Number12803
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerRobert M. Hadley Company, Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width1.937 INCHES NOMINAL IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Terminal Type and Quantity7 THREADED STUD
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage4.85 AC VOLTS NOMINAL AND 5.25 AC VOLTS NOMINAL AND 6.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Height3.562 INCHES NOMINAL IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Current11.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Length1.812 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4820-00-036-164712803 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5905-00-506-4202 INTERCHANGEABLE
Resistor Network,fixed,film
5136-00-580-715854767 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5310-00-843-3150 INTERCHANGEABLE
Washer,flat
5360-01-142-0243 INTERCHANGEABLE
Spring,helical,compression
4320-01-179-440212803 INTERCHANGEABLE
Gear Rotor Set,rotary Pump
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
5340-01-350-727112803 INTERCHANGEABLE
Bracket,mounting
Brunswick Corp Dba Mercury Marine Div Mercury Marine
4920-01-505-1118907-12803 INTERCHANGEABLE
Target Tape Reflct,
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
12803 PRIMARY Robert M. Hadley Company, Inc. (USA)
Related Parts
4820-00-036-1647INTERCHANGEABLE
DISK,VALVE
12803
5905-00-506-4202INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
5136-00-580-7158INTERCHANGEABLE
TAP,THREAD CUTTING
54767
5310-00-843-3150INTERCHANGEABLE
WASHER,FLAT
5360-01-142-0243INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4320-01-179-4402INTERCHANGEABLE
GEAR ROTOR SET,ROTARY PUMP
12803
5340-01-350-7271INTERCHANGEABLE
BRACKET,MOUNTING
12803
4920-01-505-1118INTERCHANGEABLE
TARGET TAPE REFLCT,
907-12803

Frequently Asked Questions

What is NSN 5950-00-806-9308?

NSN 5950-00-806-9308 is a Transformer,power, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-806-9308?

NSN 5950-00-806-9308 has 1 cross-referenced part number: 12803 (Robert M. Hadley Company, Inc.).

What NSN replaces 5950-00-806-9308?

There are 8 known substitutes for 5950-00-806-9308: 4820-00-036-1647, 5905-00-506-4202, 5136-00-580-7158 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12803?

Key specifications for 12803: Reliability Indicator: NOT ESTABLISHED; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Body Width: 1.937 INCHES NOMINAL IN. 18 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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