PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26203-2Relay,electromagnetic

Raytheon Company Dba Raytheon · NSN 5945-00-257-7741 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-257-7741 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-257-7741. Primary manufacturer part number: 26203-2.
Features
  • Relay,electromagnetic — FSC 5945
  • Thread Class: 2A SINGLE MOUNTING FACILITY A
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Nominal Thread Size: 0.112 INCHES SINGLE MOUNTING FACILITY IN
  • Thread Quantity Per Inch: 40 SINGLE MOUNTING FACILITY
  • Nominal Operating Current Rating and Type: 60.0 MILLIAMPERES DC SINGLE WINDING
  • Winding DC Resistance Rating: 180.0 OHMS MINIMUM AND 220.0 OHMS MAXIMUM SINGLE WINDING
  • Duty Type: CONTINUOUS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-257-7741, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN5945-00-257-7741
Primary Part Number26203-2
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Thread Class2A SINGLE MOUNTING FACILITY A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Nominal Thread Size0.112 INCHES SINGLE MOUNTING FACILITY IN
Thread Quantity Per Inch40 SINGLE MOUNTING FACILITY
Nominal Operating Current Rating and Type60.0 MILLIAMPERES DC SINGLE WINDING
Winding DC Resistance Rating180.0 OHMS MINIMUM AND 220.0 OHMS MAXIMUM SINGLE WINDING
Duty TypeCONTINUOUS
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Winding Quantity1
Pile-Up Main Contact Form Arrangement1C
Mounting Facility Type and Quantity2 THREADED STUD(S) SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Length0.594 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 24.0 DC
Coil Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage1.5 AMPERES AC AND 1.5 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
8030-00-087-8630 INTERCHANGEABLE
Antiseize Compound
4730-00-270-3886 INTERCHANGEABLE
Nut,slip Joint
3110-00-293-93020042980-3 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5960-00-503-0254 INTERCHANGEABLE
Electron Tube
5999-00-552-4389103 INTERCHANGEABLE
Clip,electrical
Zierick Mfg Corp
3110-00-554-3238 INTERCHANGEABLE
Bearing,ball,annular
5120-00-595-9570 INTERCHANGEABLE
Step Plate,mechanical Puller
5950-00-688-60299155439 INTERCHANGEABLE
Transformer,power Autotransforme
Us Army Aviation and Missile Command
5330-00-737-50286303 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5950-00-739-78352006594 INTERCHANGEABLE
Transformer,power Autotransforme
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
6303 Olympic Controls Corp (USA)
STKX109 Allied Controls, Inc. (USA)
26203-2 PRIMARY Raytheon Company Dba Raytheon (USA)
26203 Raytheon Company Dba Raytheon (USA)
Related Parts
8030-00-087-8630INTERCHANGEABLE
ANTISEIZE COMPOUND
4730-00-270-3886INTERCHANGEABLE
NUT,SLIP JOINT
3110-00-293-9302INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042980-3
5960-00-503-0254INTERCHANGEABLE
ELECTRON TUBE
5999-00-552-4389INTERCHANGEABLE
CLIP,ELECTRICAL
103
3110-00-554-3238INTERCHANGEABLE
BEARING,BALL,ANNULAR
5120-00-595-9570INTERCHANGEABLE
STEP PLATE,MECHANICAL PULLER
5950-00-688-6029INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
9155439
5330-00-737-5028INTERCHANGEABLE
SEAL,PLAIN ENCASED
6303
5950-00-739-7835INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
2006594
5960-00-804-0954INTERCHANGEABLE
ELECTRON TUBE
6303
5310-00-833-1481INTERCHANGEABLE
WASHER,KEY
11039A

Frequently Asked Questions

What is NSN 5945-00-257-7741?

NSN 5945-00-257-7741 is a Relay,electromagnetic, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-257-7741?

NSN 5945-00-257-7741 has 4 cross-referenced part numbers: 6303 (Olympic Controls Corp), STKX109 (Allied Controls, Inc.), 26203-2 (Raytheon Company Dba Raytheon), 26203 (Raytheon Company Dba Raytheon).

What NSN replaces 5945-00-257-7741?

There are 12 known substitutes for 5945-00-257-7741: 8030-00-087-8630, 4730-00-270-3886, 3110-00-293-9302 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26203-2?

Key specifications for 26203-2: Thread Class: 2A SINGLE MOUNTING FACILITY A; Overall Width: 0.960 INCHES NOMINAL IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY; Overall Height: 1.210 INCHES MAXIMUM IN. 20 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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