PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6903Transformer,power

Abc/sunray Corp · NSN 5950-00-421-0800 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-421-0800 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-421-0800. Primary manufacturer part number: 6903.
Features
  • Transformer,power — FSC 5950
  • Mounting Slot Width: 0.188 INCHES NOMINAL SINGLE GROUP IN
  • Body Height: 4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Mounting Method: FLANGE AND SLOT SINGLE GROUP
  • Inclosure Type: FULLY INCLOSED
  • Mounting Facility Quantity: 4 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 5950-00-421-0800, 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 Abc/sunray Corp. Government technical data includes 15 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
NSN5950-00-421-0800
Primary Part Number6903
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAbc/sunray Corp
StatusACTIVE
Mounting Slot Width0.188 INCHES NOMINAL SINGLE GROUP IN
Body Height4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity4 SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width3.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width3.562 INCHES MINIMUM AND 3.572 INCHES MAXIMUM IN
Body Length5.302 INCHES MINIMUM AND 5.322 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity2 TAB, SOLDER LUG AND 2 WIRE LEAD
Center to Center Distance Between Mounting Facilities Parallel to Length6.891 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6115-00-376-69856903 INTERCHANGEABLE
Generator Set,diesel Engine
Rolls-Royce Solutions America Inc
3439-00-401-1373 INTERCHANGEABLE
Handle,electric Soldering Iron
5330-00-579-128550-317 INTERCHANGEABLE
Seal,plain Encased
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5950-00-789-941527C54 INTERCHANGEABLE
Reactor
Thordarson Inc
6680-00-795-160519266 INTERCHANGEABLE
Shaft Tachometer Dr
Napco International Llc Dba Napco International Inc
5950-01-040-05475904775 INTERCHANGEABLE
Coil,radio Frequency
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
2510-01-183-828402-7005976 INTERCHANGEABLE
Shock Absorber,direct Action
Maremont Corp
5998-01-267-50746903 INTERCHANGEABLE
Circuit Card Assembly
Video Display Corporation
3110-01-468-8991528-7378786 PC52 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
6515-01-562-0893AB-21150-SS INTERCHANGEABLE
Needle,hypodermic
Teleflex Llc
Cross-Reference Index
Part NumberManufacturer
6903 Abc/sunray Corp (USA)
5LAY1102 Scott and Fetzer Co France Mfg Div (USA)
Related Parts
6115-00-376-6985INTERCHANGEABLE
GENERATOR SET,DIESEL ENGINE
6903
3439-00-401-1373INTERCHANGEABLE
HANDLE,ELECTRIC SOLDERING IRON
5330-00-579-1285INTERCHANGEABLE
SEAL,PLAIN ENCASED
50-317
5950-00-789-9415INTERCHANGEABLE
REACTOR
27C54
6680-00-795-1605INTERCHANGEABLE
SHAFT TACHOMETER DR
19266
5950-01-040-0547INTERCHANGEABLE
COIL,RADIO FREQUENCY
5904775
2510-01-183-8284INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
02-7005976
5998-01-267-5074INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6903
3110-01-468-8991INTERCHANGEABLE
BEARING,BALL,ANNULAR
528-7378786 PC52
6515-01-562-0893INTERCHANGEABLE
NEEDLE,HYPODERMIC
AB-21150-SS

Frequently Asked Questions

What is NSN 5950-00-421-0800?

NSN 5950-00-421-0800 is a Transformer,power, manufactured by Abc/sunray Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-421-0800?

NSN 5950-00-421-0800 has 2 cross-referenced part numbers: 6903 (Abc/sunray Corp), 5LAY1102 (Scott and Fetzer Co France Mfg Div).

What NSN replaces 5950-00-421-0800?

There are 10 known substitutes for 5950-00-421-0800: 6115-00-376-6985, 3439-00-401-1373, 5330-00-579-1285 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6903?

Key specifications for 6903: Mounting Slot Width: 0.188 INCHES NOMINAL SINGLE GROUP IN; Body Height: 4.365 INCHES MINIMUM AND 4.385 INCHES MAXIMUM IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Mounting Method: FLANGE AND SLOT SINGLE GROUP. 15 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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