PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51222Transformer,power

Espey Mfg. & Electronics Corp. · NSN 5950-00-444-6516 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-444-6516 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-444-6516. Primary manufacturer part number: 51222.
Features
  • Transformer,power — FSC 5950
  • Mounting Method: TERMINAL SINGLE GROUP
  • Reliability Indicator: NOT ESTABLISHED
  • Maximum Operating Temp: 71.0 CELSIUS DEGC
  • Winding Operating Current: 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Winding Operating Voltage: 5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Inclosure Type: FULLY INCLOSED
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-444-6516, 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 Espey Mfg. & Electronics Corp.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5950-00-444-6516
Primary Part Number51222
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerEspey Mfg. & Electronics Corp.
StatusACTIVE
Mounting MethodTERMINAL SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Maximum Operating Temp71.0 CELSIUS DEGC
Winding Operating Current300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Inclosure TypeFULLY INCLOSED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Current100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Current20.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Frequency Rating4.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 8 SECONDARY SINGLE COMPONENT
Winding Operating Voltage52.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage40.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Current10.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Terminal Type and Quantity27 PIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-034-2824 INTERCHANGEABLE
Nut
4320-00-113-95245122230 INTERCHANGEABLE
Pump,rotary
Rolls-Royce Solutions America Inc
9540-00-148-4327 INTERCHANGEABLE
Angle,structural
5120-00-240-529213807 INTERCHANGEABLE
Key,socket Head Screw
Bondhus Corp
5821-00-488-521646333-009-00 INTERCHANGEABLE
Modulator
Ultra Cyber Limited
5360-00-526-972351222 INTERCHANGEABLE
Spring,helical,compression
L3harris Technologies, Inc Div Space & Airborne Systems
5950-00-864-4663617226-9 INTERCHANGEABLE
Transformer,power Autotransforme
Lockheed Martin Corp
6680-01-200-179940380 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
3040-01-226-75823724-3 PIECE 202 INTERCHANGEABLE
Shaft,splined
Lake Shore Systems, Inc.
4820-01-302-8163 INTERCHANGEABLE
Valve,coupler
Cross-Reference Index
Part NumberManufacturer
51222 Espey Mfg. & Electronics Corp. (USA)
40380 Coast/advanced Chip Magnetics, Inc. (USA)
SE-011-P Espey Mfg. & Electronics Corp. (USA)
Related Parts
5310-00-034-2824INTERCHANGEABLE
NUT
4320-00-113-9524INTERCHANGEABLE
PUMP,ROTARY
5122230
9540-00-148-4327INTERCHANGEABLE
ANGLE,STRUCTURAL
5120-00-240-5292INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
13807
5821-00-488-5216INTERCHANGEABLE
MODULATOR
46333-009-00
5360-00-526-9723INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
51222
5950-00-864-4663INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
617226-9
6680-01-200-1799INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40380
3040-01-226-7582INTERCHANGEABLE
SHAFT,SPLINED
3724-3 PIECE 202
4820-01-302-8163INTERCHANGEABLE
VALVE,COUPLER
8010-01-364-0511INTERCHANGEABLE
PRIMER COATING
5122-2
5985-01-385-1813INTERCHANGEABLE
ANTENNA
40380

Frequently Asked Questions

What is NSN 5950-00-444-6516?

NSN 5950-00-444-6516 is a Transformer,power, manufactured by Espey Mfg. & Electronics Corp., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-444-6516?

NSN 5950-00-444-6516 has 3 cross-referenced part numbers: 51222 (Espey Mfg. & Electronics Corp.), 40380 (Coast/advanced Chip Magnetics, Inc.), SE-011-P (Espey Mfg. & Electronics Corp.).

What NSN replaces 5950-00-444-6516?

There are 12 known substitutes for 5950-00-444-6516: 5310-00-034-2824, 4320-00-113-9524, 9540-00-148-4327 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51222?

Key specifications for 51222: Mounting Method: TERMINAL SINGLE GROUP; Reliability Indicator: NOT ESTABLISHED; Maximum Operating Temp: 71.0 CELSIUS DEGC; Winding Operating Current: 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY. 21 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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