PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FC-6-528Relay,electromagnetic

Struthers-Dunn Inc · NSN 5945-01-178-6832 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-178-6832 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-178-6832. Primary manufacturer part number: FC-6-528.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Operating Voltage Rating and Type at Specified Temp: 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Time Delay: 0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
  • Winding DC Resistance Rating: 220.0 OHMS MAXIMUM SINGLE WINDING
  • Nonpile-Up Main Contact Arrangement: 6 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Test Data Document: 81349-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.).
  • Specification/standard Data: 81349-MIL-R-5757/1 GOVERNMENT SPECIFICATION
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-178-6832, 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 Struthers-Dunn Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-01-178-6832
Primary Part NumberFC-6-528
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerStruthers-Dunn Inc
StatusCANCELLED
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Time Delay0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
Winding DC Resistance Rating220.0 OHMS MAXIMUM SINGLE WINDING
Nonpile-Up Main Contact Arrangement6 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
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.).
Specification/standard Data81349-MIL-R-5757/1 GOVERNMENT SPECIFICATION
Unthreaded Mounting Hole Diameter0.152 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Coil Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Length1.562 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts28.0 DC
Terminal Type and Quantity20 WIRE HOOK ALL FUNCTIONS
Duty TypeCONTINUOUS
Environmental ProtectionHERMETIC
Winding Quantity1
Cubic Measure4.814 CUBIC INCHES
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES DC RESISTIVE LOAD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5945-00-458-7204 INTERCHANGEABLE
Relay,electromagnetic
5945-00-494-8964 INTERCHANGEABLE
Relay,electromagnetic
5945-00-558-9155 INTERCHANGEABLE
Relay,electromagnetic
5945-00-823-2611 INTERCHANGEABLE
Relay,electromagnetic
5945-00-874-0602 INTERCHANGEABLE
Relay,electromagnetic
5945-00-905-7719 INTERCHANGEABLE
Relay,electromagnetic
5945-01-018-1935A13-4155 INTERCHANGEABLE
Relay,electromagnetic
Dri Relays Inc. Dba Dri Relays Inc
5945-01-062-5154 INTERCHANGEABLE
Relay,electromagnetic
5945-01-159-4902 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
FC-6-528 Struthers-Dunn Inc (USA)
MIL-R-5757/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
UN312587-027 Dri Relays Inc. Dba Dri Relays Inc (USA)
MIL-DTL-5757/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5757/1-028 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
719061-3 Raytheon Company Dba Raytheon (USA)
Related Parts
5945-00-458-7204INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-494-8964INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-558-9155INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-823-2611INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-874-0602INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-905-7719INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-018-1935INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
A13-4155
5945-01-062-5154INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-159-4902INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-01-178-6832?

NSN 5945-01-178-6832 is a Relay,electromagnetic, manufactured by Struthers-Dunn Inc, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-01-178-6832?

NSN 5945-01-178-6832 has 6 cross-referenced part numbers: FC-6-528 (Struthers-Dunn Inc), MIL-R-5757/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), UN312587-027 (Dri Relays Inc. Dba Dri Relays Inc), MIL-DTL-5757/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5757/1-028 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5945-01-178-6832?

There are 9 known substitutes for 5945-01-178-6832: 5945-00-458-7204, 5945-00-494-8964, 5945-00-558-9155 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FC-6-528?

Key specifications for FC-6-528: Overall Length: 1.880 INCHES MAXIMUM IN; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Operating Voltage Rating and Type at Specified Temp: 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING; Time Delay: 0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-01-178-6832 still in active supply?

NSN 5945-01-178-6832 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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