PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

166-51Transformer,power

Avien Inc · NSN 5950-00-031-8004 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-031-8004 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-031-8004. Primary manufacturer part number: 166-51.
Features
  • Transformer,power — FSC 5950
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
  • Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Voltage: 6.00 AC VOLTS NOMINAL AND 31.00 AC VOLTS NOMINAL AND 49.00 AC VOLTS NOMINAL AND 67.00 AC VOLTS NOMINAL AND 76.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Winding Operating Current: 14.5 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Terminal Type and Quantity: 9 TAB, SOLDER LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-031-8004, 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 Avien Inc. Government technical data includes 18 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-031-8004
Primary Part Number166-51
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAvien Inc
StatusACTIVE
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage6.00 AC VOLTS NOMINAL AND 31.00 AC VOLTS NOMINAL AND 49.00 AC VOLTS NOMINAL AND 67.00 AC VOLTS NOMINAL AND 76.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current14.5 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Terminal Type and Quantity9 TAB, SOLDER LUG
Mounting Facility Quantity4 SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Body Width1.375 INCHES NOMINAL IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Length1.688 INCHES NOMINAL IN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Body Height1.375 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4920-00-063-3511 INTERCHANGEABLE
Cap Assembly,gas Pump
2940-00-226-948082715A INTERCHANGEABLE
Filter Element,fluid
Cummins Filtration Inc.
2940-00-364-341516651 INTERCHANGEABLE
Handle,cleaning
Arvinmeritor Inc
5330-00-448-081316-651 INTERCHANGEABLE
Gasket
Dresser Industries Inc Leroi Div
1650-00-529-4148668047 INTERCHANGEABLE
Filter,fluid
Lockheed Martin Corp
5945-00-967-3616 INTERCHANGEABLE
Solenoid,electrical
5306-01-126-1169166-51 INTERCHANGEABLE
Bolt,machine
Cnh Industrial America Llc Dba Cnh America
5310-01-141-182416651 INTERCHANGEABLE
Washer
Forenta Lp
4810-01-514-4901 INTERCHANGEABLE
Valve,flow Control
6515-01-591-6776242.804 INTERCHANGEABLE
Bone Plate
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
166-51 Avien Inc
TP524 North Erie Electronics, Inc Dba Fisher Engineering (USA)
Related Parts
4920-00-063-3511INTERCHANGEABLE
CAP ASSEMBLY,GAS PUMP
2940-00-226-9480INTERCHANGEABLE
FILTER ELEMENT,FLUID
82715A
2940-00-364-3415INTERCHANGEABLE
HANDLE,CLEANING
16651
5330-00-448-0813INTERCHANGEABLE
GASKET
16-651
1650-00-529-4148INTERCHANGEABLE
FILTER,FLUID
668047
5945-00-967-3616INTERCHANGEABLE
SOLENOID,ELECTRICAL
5306-01-126-1169INTERCHANGEABLE
BOLT,MACHINE
166-51
5310-01-141-1824INTERCHANGEABLE
WASHER
16651
4810-01-514-4901INTERCHANGEABLE
VALVE,FLOW CONTROL
6515-01-591-6776INTERCHANGEABLE
BONE PLATE
242.804

Frequently Asked Questions

What is NSN 5950-00-031-8004?

NSN 5950-00-031-8004 is a Transformer,power, manufactured by Avien Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-031-8004?

NSN 5950-00-031-8004 has 2 cross-referenced part numbers: 166-51 (Avien Inc), TP524 (North Erie Electronics, Inc Dba Fisher Engineering).

What NSN replaces 5950-00-031-8004?

There are 10 known substitutes for 5950-00-031-8004: 4920-00-063-3511, 2940-00-226-9480, 2940-00-364-3415 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 166-51?

Key specifications for 166-51: Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT; Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 18 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