PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

504581Transformer,power

Instruments and Flight Research, Inc. · NSN 5950-00-647-5863 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-5863 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-5863. Primary manufacturer part number: 504581.
Features
  • Transformer,power — FSC 5950
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Length: 3.750 INCHES NOMINAL IN
  • Body Width: 3.000 INCHES NOMINAL IN
  • Winding Operating Voltage: 107.00 AC VOLTS NOMINAL AND 117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) 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 5950-00-647-5863, 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 Instruments and Flight Research, Inc.. Government technical data includes 17 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-647-5863
Primary Part Number504581
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerInstruments and Flight Research, Inc.
StatusCANCELLED
Center to Center Distance Between Mounting Facilities Parallel to Length3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length3.750 INCHES NOMINAL IN
Body Width3.000 INCHES NOMINAL IN
Winding Operating Voltage107.00 AC VOLTS NOMINAL AND 117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.375 INCHES NOMINAL SINGLE GROUP IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Terminal Type and Quantity6 WIRE LEAD
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Body Height4.625 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeOPEN
Winding Operating Current20.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4940-01-277-9114 INTERCHANGEABLE
Slide Valve Assembly
6515-01-346-481718-4035C INTERCHANGEABLE
Post,table,retractor
Boss Instruments, Limited Inc
6530-01-630-758350-4581 INTERCHANGEABLE
Support,arm,utility
Specialty Surgical Instrumentation, Inc. Dba Symmetry Surgical Inc Div Symmetry Surgical
Cross-Reference Index
Part NumberManufacturer
504581 PRIMARY Instruments and Flight Research, Inc. (USA)
P6309 Emerson Electric Co White-Rodgers Div (USA)
HB2976 Dowty Rfl Industries Inc (USA)
Related Parts
4940-01-277-9114INTERCHANGEABLE
SLIDE VALVE ASSEMBLY
6515-01-346-4817INTERCHANGEABLE
POST,TABLE,RETRACTOR
18-4035C
6530-01-630-7583INTERCHANGEABLE
SUPPORT,ARM,UTILITY
50-4581

Frequently Asked Questions

What is NSN 5950-00-647-5863?

NSN 5950-00-647-5863 is a Transformer,power, manufactured by Instruments and Flight Research, Inc., classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-647-5863?

NSN 5950-00-647-5863 has 3 cross-referenced part numbers: 504581 (Instruments and Flight Research, Inc.), P6309 (Emerson Electric Co White-Rodgers Div), HB2976 (Dowty Rfl Industries Inc).

What NSN replaces 5950-00-647-5863?

There are 3 known substitutes for 5950-00-647-5863: 4940-01-277-9114, 6515-01-346-4817, 6530-01-630-7583. Verify interchangeability with system specifications before substitution.

What are the specifications of 504581?

Key specifications for 504581: Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Body Length: 3.750 INCHES NOMINAL IN; Body Width: 3.000 INCHES NOMINAL IN; Winding Operating Voltage: 107.00 AC VOLTS NOMINAL AND 117.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-647-5863 still in active supply?

NSN 5950-00-647-5863 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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