PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

259056-1Relay,electromagnetic

L3 Technologies, Inc. Div Communication Systems-East · NSN 5945-00-231-0025 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-231-0025 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-231-0025. Primary manufacturer part number: 259056-1.
Features
  • Relay,electromagnetic — FSC 5945
  • Main Contact Load Current Rating at Maximum Rated Voltage: 1.5 AMPERES AC RESISTIVE LOAD
  • Coil Quantity: 1
  • Thread Class: 2A SINGLE MOUNTING FACILITY A
  • Winding DC Resistance Rating: 250.0 OHMS NOMINAL SINGLE WINDING
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
  • Terminal Type and Quantity: 6 PIN ALL FUNCTIONS
  • Mounting Facility Type and Quantity: 1 THREADED STUD(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-231-0025, 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 L3 Technologies, Inc. Div Communication Systems-East. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-231-0025
Primary Part Number259056-1
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div Communication Systems-East
StatusACTIVE
Main Contact Load Current Rating at Maximum Rated Voltage1.5 AMPERES AC RESISTIVE LOAD
Coil Quantity1
Thread Class2A SINGLE MOUNTING FACILITY A
Winding DC Resistance Rating250.0 OHMS NOMINAL SINGLE WINDING
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity6 PIN ALL FUNCTIONS
Mounting Facility Type and Quantity1 THREADED STUD(S) SINGLE MOUNTING FACILITY
Winding Quantity1
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp19.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Nonpile-Up Main Contact Arrangement2 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Main Contact Maximum Voltage Rating in Volts115.0 AC
Nominal Operating Current Rating and Type200.0 MILLIAMPERES DC SINGLE WINDING
Duty TypeCONTINUOUS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5133-00-189-9291 INTERCHANGEABLE
Drill,twist
7330-00-244-4549601830 INTERCHANGEABLE
Pan,muffin
Oakridge Builders Inc
5120-00-261-2820 INTERCHANGEABLE
Socket,socket Wrench
2520-00-540-9516 INTERCHANGEABLE
Propeller Shaft,vehicular
5340-01-106-207211662314 INTERCHANGEABLE
Handle,manual Control
Bay Machine Inc. Dba Bay Machine Inc
4810-01-168-968513346 INTERCHANGEABLE
Spacer,valve,solenoid
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5935-01-394-463613346 INTERCHANGEABLE
Connector,plug,electrical
Vaisala Inc.
4920-01-527-637913346 INTERCHANGEABLE
Adapter,cable Breakout
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
KR1473-2 Te Connectivity Corporation (USA)
259056-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
K1605 Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft) (USA)
KR1473-3 Te Connectivity Corporation (USA)
13346 Cooper Bussmann, Llc Dba Cooper Industries (USA)
259056-1 PRIMARY L3 Technologies, Inc. Div Communication Systems-East (USA)
Related Parts
5133-00-189-9291INTERCHANGEABLE
DRILL,TWIST
7330-00-244-4549INTERCHANGEABLE
PAN,MUFFIN
601830
5120-00-261-2820INTERCHANGEABLE
SOCKET,SOCKET WRENCH
2520-00-540-9516INTERCHANGEABLE
PROPELLER SHAFT,VEHICULAR
5340-01-106-2072INTERCHANGEABLE
HANDLE,MANUAL CONTROL
11662314
4810-01-168-9685INTERCHANGEABLE
SPACER,VALVE,SOLENOID
13346
5935-01-394-4636INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
13346
4920-01-527-6379INTERCHANGEABLE
ADAPTER,CABLE BREAKOUT
13346

Frequently Asked Questions

What is NSN 5945-00-231-0025?

NSN 5945-00-231-0025 is a Relay,electromagnetic, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-231-0025?

NSN 5945-00-231-0025 has 6 cross-referenced part numbers: KR1473-2 (Te Connectivity Corporation), 259056-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), K1605 (Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft)), KR1473-3 (Te Connectivity Corporation), 13346 (Cooper Bussmann, Llc Dba Cooper Industries) and 1 more.

What NSN replaces 5945-00-231-0025?

There are 8 known substitutes for 5945-00-231-0025: 5133-00-189-9291, 7330-00-244-4549, 5120-00-261-2820 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 259056-1?

Key specifications for 259056-1: Main Contact Load Current Rating at Maximum Rated Voltage: 1.5 AMPERES AC RESISTIVE LOAD; Coil Quantity: 1; Thread Class: 2A SINGLE MOUNTING FACILITY A; Overall Length: 1.810 INCHES MAXIMUM IN. 17 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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