PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILR5757Relay,electromagnetic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-00-089-2732 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-089-2732 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-089-2732. Primary manufacturer part number: MILR5757.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY
  • Coil Quantity: 1
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.124 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.096 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Main Contact Load Current Rating at Maximum Rated Voltage: 2.00 AMPERES DC INDUCTIVE LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-089-2732, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-089-2732
Primary Part NumberMILR5757
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Coil Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Width0.124 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Unthreaded Mounting Hole Diameter0.096 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage2.00 AMPERES DC INDUCTIVE LOAD
Environmental ProtectionHERMETIC
Main Contact Maximum Voltage Rating in Volts26.5 DC
Nondefinitive Spec/std DataRY4NA1B3L01 TYPE
Operating Voltage Rating and Type at Specified Temp26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Winding DC Resistance Rating495.0 OHMS NOMINAL SINGLE WINDING
Pile-Up Main Contact Form Arrangement2C
Duty TypeCONTINUOUS
Center to Center Distance Between Mounting Facilities Parallel to Length1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5945-00-051-7270 INTERCHANGEABLE
Relay,electromagnetic
5945-00-088-5425 INTERCHANGEABLE
Relay,reed
5945-00-665-9453SKHX657 INTERCHANGEABLE
Relay,electromagnetic
Allied Controls, Inc.
5945-00-829-0004 INTERCHANGEABLE
Relay,electromagnetic
5945-00-942-4427 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
MILR5757 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RY4NA1B3L01 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4170600-018 Raytheon Company Div Rmd Strategic (USA)
4170600-18 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5945-00-051-7270INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-088-5425INTERCHANGEABLE
RELAY,REED
5945-00-665-9453INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
SKHX657
5945-00-829-0004INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-942-4427INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-00-089-2732?

NSN 5945-00-089-2732 is a Relay,electromagnetic, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-089-2732?

NSN 5945-00-089-2732 has 4 cross-referenced part numbers: MILR5757 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), RY4NA1B3L01 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 4170600-018 (Raytheon Company Div Rmd Strategic), 4170600-18 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5945-00-089-2732?

There are 5 known substitutes for 5945-00-089-2732: 5945-00-051-7270, 5945-00-088-5425, 5945-00-665-9453 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILR5757?

Key specifications for MILR5757: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 1.100 INCHES NOMINAL IN; Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY; Coil Quantity: 1. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-089-2732 still in active supply?

NSN 5945-00-089-2732 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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