PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C2928-51Transformer,power

Scomill Inc · NSN 5950-00-521-1209 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-521-1209 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-521-1209. Primary manufacturer part number: C2928-51.
Features
  • Transformer,power — FSC 5950
  • Body Width: 3.500 INCHES NOMINAL IN
  • Winding Operating Current: 270.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Reliability Indicator: NOT ESTABLISHED
  • Terminal Type and Quantity: 11 STANDOFF, SOLDER LUG
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
  • Mounting Method: THREADED STUD(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 5950-00-521-1209, 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 Scomill Inc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5950-00-521-1209
Primary Part NumberC2928-51
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerScomill Inc
StatusACTIVE
Body Width3.500 INCHES NOMINAL IN
Winding Operating Current270.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity11 STANDOFF, SOLDER LUG
Center to Center Distance Between Mounting Facilities Parallel to Width2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage105.00 AC VOLTS NOMINAL AND 117.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeHERMETICALLY SEALED
Winding Operating Current9.0 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Body Height4.875 INCHES NOMINAL IN
Frequency Rating60.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Voltage135.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current4.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage430.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage2.70 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Body Length4.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-418521012 INTERCHANGEABLE
Bearing,roller,tapered
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5325-00-290-4344 INTERCHANGEABLE
Grommet,nonmetallic
5950-00-494-335721012 INTERCHANGEABLE
Transformer,audio Frequency
Magnetika Inc
6625-00-578-5476 INTERCHANGEABLE
Ammeter
2990-00-675-14861876 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5110-00-764-52225110-00-764-5222 INTERCHANGEABLE
Cutter,circle
General Services Administration Federal Supply Service
2990-00-869-5710210-12 INTERCHANGEABLE
Muffler,exhaust
Crane Carrier Company, Llc
5940-00-983-6089 INTERCHANGEABLE
Terminal Board
5330-00-994-206921012 INTERCHANGEABLE
Gasket
Aerosonic Llc
4820-01-012-286321012 INTERCHANGEABLE
Body,valve
Rogerson Aircraft Equipment Group
Cross-Reference Index
Part NumberManufacturer
C2928-51 Scomill Inc (USA)
C2928-51 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
21012 Freed Transformer Co (USA)
BX-9364 Baltimore Transformer Co (USA)
Related Parts
3110-00-100-4185INTERCHANGEABLE
BEARING,ROLLER,TAPERED
21012
5325-00-290-4344INTERCHANGEABLE
GROMMET,NONMETALLIC
5950-00-494-3357INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
21012
6625-00-578-5476INTERCHANGEABLE
AMMETER
2990-00-675-1486INTERCHANGEABLE
MUFFLER,EXHAUST
1876
5110-00-764-5222INTERCHANGEABLE
CUTTER,CIRCLE
5110-00-764-5222
2990-00-869-5710INTERCHANGEABLE
MUFFLER,EXHAUST
210-12
5940-00-983-6089INTERCHANGEABLE
TERMINAL BOARD
5330-00-994-2069INTERCHANGEABLE
GASKET
21012
4820-01-012-2863INTERCHANGEABLE
BODY,VALVE
21012
3455-01-051-1326INTERCHANGEABLE
INSERT,CUTTING TOOL
1B2F
6505-01-148-8033INTERCHANGEABLE
CETYLPYRIDINIUM CHLORIDE SOLUTIO

Frequently Asked Questions

What is NSN 5950-00-521-1209?

NSN 5950-00-521-1209 is a Transformer,power, manufactured by Scomill Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-521-1209?

NSN 5950-00-521-1209 has 4 cross-referenced part numbers: C2928-51 (Scomill Inc), C2928-51 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 21012 (Freed Transformer Co), BX-9364 (Baltimore Transformer Co).

What NSN replaces 5950-00-521-1209?

There are 12 known substitutes for 5950-00-521-1209: 3110-00-100-4185, 5325-00-290-4344, 5950-00-494-3357 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C2928-51?

Key specifications for C2928-51: Body Width: 3.500 INCHES NOMINAL IN; Winding Operating Current: 270.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY; Reliability Indicator: NOT ESTABLISHED; Terminal Type and Quantity: 11 STANDOFF, SOLDER LUG. 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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