PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S273Reactor

Electronic Transformer Corp Div Electronic Transformer Corporation · NSN 5950-00-157-3785 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-157-3785 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-157-3785. Primary manufacturer part number: S273.
Features
  • Reactor — FSC 5950
  • Body Height: 4.125 INCHES NOMINAL IN
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Nominal Thread Size: 0.190 INCHES SINGLE GROUP IN
  • Body Length: 4.500 INCHES NOMINAL IN
  • Inductance Rating: 6.05 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Reliability Indicator: NOT ESTABLISHED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-157-3785, 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 Electronic Transformer Corp Div Electronic Transformer Corporation. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-157-3785
Primary Part NumberS273
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerElectronic Transformer Corp Div Electronic Transformer Corporation
StatusACTIVE
Body Height4.125 INCHES NOMINAL IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Nominal Thread Size0.190 INCHES SINGLE GROUP IN
Body Length4.500 INCHES NOMINAL IN
Inductance Rating6.05 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 WIRE LEAD
Reliability IndicatorNOT ESTABLISHED
Body Width3.250 INCHES NOMINAL IN
Thread Quantity Per Inch32 SINGLE GROUP
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length3.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypePARTIALLY INCLOSED, HALF SHELL
Thread Series DesignatorUNF SINGLE GROUP
Winding Quantity1 SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current5.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms0.400 SINGLE COMPONENT SINGLE WINDING
Inductance TypeFIXED
Center to Center Distance Between Mounting Facilities Parallel to Width2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-975-2075 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-197-6192S273 INTERCHANGEABLE
Nut,jam
Cummins Inc.
Cross-Reference Index
Part NumberManufacturer
S273 PRIMARY Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
Related Parts
5310-00-975-2075INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-197-6192INTERCHANGEABLE
NUT,JAM
S273

Frequently Asked Questions

What is NSN 5950-00-157-3785?

NSN 5950-00-157-3785 is a Reactor, manufactured by Electronic Transformer Corp Div Electronic Transformer Corporation, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-157-3785?

NSN 5950-00-157-3785 has 1 cross-referenced part number: S273 (Electronic Transformer Corp Div Electronic Transformer Corporation).

What NSN replaces 5950-00-157-3785?

There are 2 known substitutes for 5950-00-157-3785: 5310-00-975-2075, 5310-01-197-6192. Verify interchangeability with system specifications before substitution.

What are the specifications of S273?

Key specifications for S273: Body Height: 4.125 INCHES NOMINAL IN; Mounting Method: THREADED HOLE(S) SINGLE GROUP; Nominal Thread Size: 0.190 INCHES SINGLE GROUP IN; Body Length: 4.500 INCHES NOMINAL IN. 19 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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