PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BTC5266Reactor

Berkshire Transformer · NSN 5950-00-728-6435 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-728-6435 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-728-6435. Primary manufacturer part number: BTC5266.
Features
  • Reactor — FSC 5950
  • Body Length: 4.125 INCHES NOMINAL IN
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Body Width: 3.375 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Inductance Rating: 2.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Operating Current: 15.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-728-6435, 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 Berkshire Transformer. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5950-00-728-6435
Primary Part NumberBTC5266
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBerkshire Transformer
StatusACTIVE
Body Length4.125 INCHES NOMINAL IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Body Width3.375 INCHES NOMINAL IN
Terminal Type and Quantity2 WIRE LEAD
Inductance Rating2.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current15.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Mounting Slot Width0.187 INCHES NOMINAL SINGLE GROUP IN
Inductance TypeFIXED
Winding Quantity1 SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length3.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Inclosure TypePARTIALLY INCLOSED, DOUBLE SHELL
DC Resistance Rating in Ohms0.012 SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
Body Height3.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2925-00-033-2546 INTERCHANGEABLE
Cam,magneto
2520-00-080-63542621 INTERCHANGEABLE
Transfer Transmission Assembly
Fwd Seagrave Holdings Lp
8030-00-145-0081 INTERCHANGEABLE
Sealing Compound
5996-00-543-1423AM944A1C13 INTERCHANGEABLE
Amplifier,audio Frequency
Joint Electronics Type Designation System
5940-00-552-5120014-1000-47-9 INTERCHANGEABLE
Terminal,stud
Itt Cannon Rf Products
5935-01-036-47042621 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5970-01-233-3232 INTERCHANGEABLE
Insulator,standoff
7610-01-349-865712944250 INTERCHANGEABLE
Book
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
2540-01-351-057422127653 INTERCHANGEABLE
Window Washer Assembly
General Motors Llc Dba General Motors Llc
5930-01-373-1927 INTERCHANGEABLE
Push Button
Cross-Reference Index
Part NumberManufacturer
BTC5266 Berkshire Transformer (USA)
HB12911 Dowty Rfl Industries Inc (USA)
2621 Inrcore, Llc Div Inrcore (USA)
Related Parts
2925-00-033-2546INTERCHANGEABLE
CAM,MAGNETO
2520-00-080-6354INTERCHANGEABLE
TRANSFER TRANSMISSION ASSEMBLY
2621
8030-00-145-0081INTERCHANGEABLE
SEALING COMPOUND
5996-00-543-1423INTERCHANGEABLE
AMPLIFIER,AUDIO FREQUENCY
AM944A1C13
5940-00-552-5120INTERCHANGEABLE
TERMINAL,STUD
014-1000-47-9
5935-01-036-4704INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2621
5970-01-233-3232INTERCHANGEABLE
INSULATOR,STANDOFF
7610-01-349-8657INTERCHANGEABLE
BOOK
12944250
2540-01-351-0574INTERCHANGEABLE
WINDOW WASHER ASSEMBLY
22127653
5930-01-373-1927INTERCHANGEABLE
PUSH BUTTON
4730-01-381-3784INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
6520-01-393-7160INTERCHANGEABLE
RESIN,RESTORATIVE,DENTAL
5906P

Frequently Asked Questions

What is NSN 5950-00-728-6435?

NSN 5950-00-728-6435 is a Reactor, manufactured by Berkshire Transformer, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-728-6435?

NSN 5950-00-728-6435 has 3 cross-referenced part numbers: BTC5266 (Berkshire Transformer), HB12911 (Dowty Rfl Industries Inc), 2621 (Inrcore, Llc Div Inrcore).

What NSN replaces 5950-00-728-6435?

There are 12 known substitutes for 5950-00-728-6435: 2925-00-033-2546, 2520-00-080-6354, 8030-00-145-0081 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BTC5266?

Key specifications for BTC5266: Body Length: 4.125 INCHES NOMINAL IN; Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING; Body Width: 3.375 INCHES NOMINAL IN; Terminal Type and Quantity: 2 WIRE LEAD. 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