PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y61RELAYRelay,electromagnetic

Lucent Technologies Inc Corporate Headquarters · NSN 5945-00-503-8965 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-503-8965 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-503-8965. Primary manufacturer part number: Y61RELAY.
Features
  • Relay,electromagnetic — FSC 5945
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Mounting Facility Pattern: DIAGONAL SINGLE MOUNTING FACILITY
  • Terminal Type and Quantity: 8 PIN ALL FUNCTIONS
  • Coil Quantity: 1
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.312 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding DC Resistance Rating: 225.0 OHMS NOMINAL SINGLE WINDING
  • Main Contact Load Current Rating at Maximum Rated Voltage: 500.0 MILLIAMPERES DC RESISTIVE LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-503-8965, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-503-8965
Primary Part NumberY61RELAY
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Mounting Facility PatternDIAGONAL SINGLE MOUNTING FACILITY
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Coil Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Width0.312 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding DC Resistance Rating225.0 OHMS NOMINAL SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage500.0 MILLIAMPERES DC RESISTIVE LOAD
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Environmental ProtectionDUSTPROOF
Center to Center Distance Between Mounting Facilities Parallel to Length0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Pile-Up Main Contact Form Arrangement2A1B
Operating Voltage Rating and Type at Specified Temp27.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility Type and Quantity2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Nominal Operating Current Rating and Type90.0 MILLIAMPERES DC SINGLE WINDING
Winding Quantity1
Thread Class2B SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts50.0 DC
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2940-00-484-289842095 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5310-01-084-5418988284-3 INTERCHANGEABLE
Washer,lock
Raytheon Company Dba Raytheon
5342-01-239-314542095 INTERCHANGEABLE
Clip,special
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5855-01-656-5299 INTERCHANGEABLE
Illuminator,integrated,small Arm
6230-01-666-939642095 INTERCHANGEABLE
Light,extension
Global Manufacturing Corporation
Cross-Reference Index
Part NumberManufacturer
Y61 At and T Corp (USA)
Y61RELAY PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
Y61 American Telephone and Telegraph Co (USA)
Y61 Lucent Technologies Inc Dba Federal Marketing Group (USA)
42095 Lucent Technologies Inc Advanced Technology Systems (USA)
42095 American Telephone and Telegraph Co (USA)
Y61RELAY Lucent Technologies Inc Dba Federal Marketing Group (USA)
Y61 Lucent Technologies Inc Corporate Headquarters (USA)
42095 At and T Corp (USA)
42095 Telemechanics Inc (USA)
Y61RELAY American Telephone and Telegraph Co (USA)
Related Parts
2940-00-484-2898INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42095
5310-01-084-5418INTERCHANGEABLE
WASHER,LOCK
988284-3
5342-01-239-3145INTERCHANGEABLE
CLIP,SPECIAL
42095
5855-01-656-5299INTERCHANGEABLE
ILLUMINATOR,INTEGRATED,SMALL ARM
6230-01-666-9396INTERCHANGEABLE
LIGHT,EXTENSION
42095

Frequently Asked Questions

What is NSN 5945-00-503-8965?

NSN 5945-00-503-8965 is a Relay,electromagnetic, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-503-8965?

NSN 5945-00-503-8965 has 11 cross-referenced part numbers: Y61 (At and T Corp), Y61RELAY (Lucent Technologies Inc Corporate Headquarters), Y61 (American Telephone and Telegraph Co), Y61 (Lucent Technologies Inc Dba Federal Marketing Group), 42095 (Lucent Technologies Inc Advanced Technology Systems) and 6 more.

What NSN replaces 5945-00-503-8965?

There are 5 known substitutes for 5945-00-503-8965: 2940-00-484-2898, 5310-01-084-5418, 5342-01-239-3145 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of Y61RELAY?

Key specifications for Y61RELAY: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY; Mounting Facility Pattern: DIAGONAL SINGLE MOUNTING FACILITY; Terminal Type and Quantity: 8 PIN ALL FUNCTIONS; Coil Quantity: 1. 22 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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