PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81556-2Transformer,power

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 5950-01-182-6745 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-182-6745 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-182-6745. Primary manufacturer part number: 81556-2.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Frequency Rating: 50.0 KILOHERTZ MINIMUM AND 100.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Overall Diameter: 1.700 INCHES NOMINAL IN
  • Winding Operating Current: 250.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • 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 5950-01-182-6745, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 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
NSN5950-01-182-6745
Primary Part Number81556-2
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Frequency Rating50.0 KILOHERTZ MINIMUM AND 100.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Overall Diameter1.700 INCHES NOMINAL IN
Winding Operating Current250.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch32 SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage18.00 AC VOLTS MINIMUM AND 35.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Criticality Code JustificationFEAT
Inclosure TypeFULLY INCLOSED
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting Facility Quantity1 SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Terminal Type and Quantity6 WIRE LEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5970-00-038-021881556 INTERCHANGEABLE
Insulator,plate
Hamilton Sundstrand Corporation Dba Collins Aerospace
3110-00-144-8556 INTERCHANGEABLE
Bearing,ball,annular
6625-00-356-0252SMB291032 INTERCHANGEABLE
Meter,audio Level
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5307-00-514-6835 INTERCHANGEABLE
Stud,shouldered
5905-00-549-411916022 INTERCHANGEABLE
Resistor,adjustable
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
5925-01-192-7712 INTERCHANGEABLE
Circuit Breaker
5365-01-197-03091602-6 INTERCHANGEABLE
Bushing
Manitowoc Engineering Co Division of the Manitowoc Co Inc
4720-01-213-1282453126 INTERCHANGEABLE
Hose Assembly,nonmetallic
Sloan Transportation Products Div of Bld Products Ltd
5330-01-280-758416026 INTERCHANGEABLE
Gasket
Frick Co
5975-01-325-5094 INTERCHANGEABLE
Chassis,electrical-Electronic Eq
Cross-Reference Index
Part NumberManufacturer
81556 United Technologies Corp Hamilton Sundstrand Corp (USA)
DPD-120 United Transformer Corp Sub of Opt Industries Inc (USA)
81556-2 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
D310D B G Laboratories Inc. (USA)
DPD-120 Magnetika Inc (USA)
1602-6 Magnetic Windings Company Inc (USA)
Related Parts
5970-00-038-0218INTERCHANGEABLE
INSULATOR,PLATE
81556
3110-00-144-8556INTERCHANGEABLE
BEARING,BALL,ANNULAR
6625-00-356-0252INTERCHANGEABLE
METER,AUDIO LEVEL
SMB291032
5307-00-514-6835INTERCHANGEABLE
STUD,SHOULDERED
5905-00-549-4119INTERCHANGEABLE
RESISTOR,ADJUSTABLE
16022
5925-01-192-7712INTERCHANGEABLE
CIRCUIT BREAKER
5365-01-197-0309INTERCHANGEABLE
BUSHING
1602-6
4720-01-213-1282INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
453126
5330-01-280-7584INTERCHANGEABLE
GASKET
16026
5975-01-325-5094INTERCHANGEABLE
CHASSIS,ELECTRICAL-ELECTRONIC EQ
6650-01-414-9402INTERCHANGEABLE
BINOCULAR
16026
3110-01-428-6083INTERCHANGEABLE
BEARING,BALL,ANNULAR
815561

Frequently Asked Questions

What is NSN 5950-01-182-6745?

NSN 5950-01-182-6745 is a Transformer,power, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-182-6745?

NSN 5950-01-182-6745 has 6 cross-referenced part numbers: 81556 (United Technologies Corp Hamilton Sundstrand Corp), DPD-120 (United Transformer Corp Sub of Opt Industries Inc), 81556-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace), D310D (B G Laboratories Inc.), DPD-120 (Magnetika Inc) and 1 more.

What NSN replaces 5950-01-182-6745?

There are 12 known substitutes for 5950-01-182-6745: 5970-00-038-0218, 3110-00-144-8556, 6625-00-356-0252 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81556-2?

Key specifications for 81556-2: Overall Length: 1.200 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Mounting Method: THREADED HOLE(S) SINGLE GROUP; Frequency Rating: 50.0 KILOHERTZ MINIMUM AND 100.0 KILOHERTZ MAXIMUM SINGLE COMPONENT. 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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