PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILR5757-9Relay,electromagnetic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-00-904-8319 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-904-8319 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-904-8319. Primary manufacturer part number: MILR5757-9.
Features
  • Relay,electromagnetic — FSC 5945
  • Nominal Operating Current Rating and Type: 44.0 MILLIAMPERES DC SINGLE WINDING
  • Terminal Type and Quantity: 8 PIN ALL FUNCTIONS
  • Operating Voltage Rating and Type at Specified Temp: 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Pile-Up Main Contact Form Arrangement: 2C
  • Specification/standard Data: 81349-MIL-R-5757/9 GOVERNMENT SPECIFICATION
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Duty Type: CONTINUOUS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-904-8319, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-904-8319
Primary Part NumberMILR5757-9
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
Nominal Operating Current Rating and Type44.0 MILLIAMPERES DC SINGLE WINDING
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Operating Voltage Rating and Type at Specified Temp26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Pile-Up Main Contact Form Arrangement2C
Specification/standard Data81349-MIL-R-5757/9 GOVERNMENT SPECIFICATION
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Winding DC Resistance Rating600.0 OHMS NOMINAL SINGLE WINDING
Test Data Document81349-MIL-R-5757 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Environmental ProtectionHERMETIC
Winding Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage300.0 MILLIAMPERES AC AND 750.0 MILLIAMPERES DC RESISTIVE LOAD
Coil Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5945-00-777-5087600-3504-202 INTERCHANGEABLE
Relay,electromagnetic
Applied Biosystems, Llc Dba Life Technologies
5945-01-170-6307 INTERCHANGEABLE
Relay,electromagnetic
5945-01-446-16945106199 ITEM 356 INTERCHANGEABLE
Relay,electromagnetic
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
MILR5757-9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5757-9-003 Cp Clare Corp North American Sales Operations (USA)
H5757-9-003 Leach International Germany Gmbh (DEU)
335476-3 Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
200150-003 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
DJ26C1P6A23 Dri Relays Inc. Dba Dri Relays Inc (USA)
RY4YY4B3P11 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SR62118 Branson Corp (USA)
948091-60 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
M5757-9-003 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
352250005053 Thales Nederland (NLD)
SR62118 Te Connectivity Corporation (USA)
M5757-9-003 Joint Electronics Type Designation System (USA)
600-3504-202 Mte Corp (USA)
SA6A1-26-5VDC Allied Controls, Inc. (USA)
948091-60 Litton Systems Inc. Div Navigation Systems Division (USA)
M5757-9-003 Te Connectivity Corporation (USA)
55843-1 L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
BR26S15 Microsemi Corp.-Power Management Group (USA)
S6A1&26.5VDC Allied Controls, Inc. (USA)
Related Parts
5945-00-777-5087INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
600-3504-202
5945-01-170-6307INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-446-1694INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5106199 ITEM 356

Frequently Asked Questions

What is NSN 5945-00-904-8319?

NSN 5945-00-904-8319 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 5945-00-904-8319?

NSN 5945-00-904-8319 has 21 cross-referenced part numbers: MILR5757-9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5757-9-003 (Cp Clare Corp North American Sales Operations), H5757-9-003 (Leach International Germany Gmbh), 335476-3 (Alliant Techsystems Operations Llc Div Defense Electronic Systems), 200150-003 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems) and 16 more.

What NSN replaces 5945-00-904-8319?

There are 3 known substitutes for 5945-00-904-8319: 5945-00-777-5087, 5945-01-170-6307, 5945-01-446-1694. Verify interchangeability with system specifications before substitution.

What are the specifications of MILR5757-9?

Key specifications for MILR5757-9: Overall Length: 0.810 INCHES NOMINAL IN; Overall Width: 0.597 INCHES NOMINAL IN; Nominal Operating Current Rating and Type: 44.0 MILLIAMPERES DC SINGLE WINDING; Terminal Type and Quantity: 8 PIN ALL FUNCTIONS. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-904-8319 still in active supply?

NSN 5945-00-904-8319 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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