PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

504-2-8Relay,electromagnetic

Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc · NSN 5945-00-321-0800 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-321-0800 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-321-0800. Primary manufacturer part number: 504-2-8.
Features
  • Relay,electromagnetic — FSC 5945
  • Nominal Thread Size: 0.164 INCHES SINGLE MOUNTING FACILITY IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding Quantity: 1
  • Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Coil Quantity: 1
  • Terminal Type and Quantity: 8 TAB, SOLDER LUG ALL FUNCTIONS
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-321-0800, 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 Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5945-00-321-0800
Primary Part Number504-2-8
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
StatusACTIVE
Nominal Thread Size0.164 INCHES SINGLE MOUNTING FACILITY IN
Center to Center Distance Between Mounting Facilities Parallel to Width0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Coil Quantity1
Terminal Type and Quantity8 TAB, SOLDER LUG ALL FUNCTIONS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Thread Class2A SINGLE MOUNTING FACILITY A
Mounting Facility Type and Quantity2 THREADED STUD(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Environmental ProtectionDUSTPROOF
Main Contact Load Current Rating at Maximum Rated Voltage125.0 MILLIAMPERES AC AND 125.0 MILLIAMPERES DC RESISTIVE LOAD
Pile-Up Main Contact Form Arrangement1B AND 1H
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-156-5095118031-1 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3030-00-294-9836 INTERCHANGEABLE
Belt,v
3455-00-531-132719636 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
4730-01-011-442770120 INTERCHANGEABLE
Plug,pipe,magnetic
Paccar Winch Inc Dba Paccar Winch Division
6145-01-038-9725 INTERCHANGEABLE
Cable,special Purpose,electrical
5306-01-517-929203-19649-00 INTERCHANGEABLE
Bolt,shoulder
Titan Wheel Corporation of Illinois
5331-01-589-8183504-28 INTERCHANGEABLE
O-Ring
Schmidt & Bender Incorporated
5950-01-597-117850428 INTERCHANGEABLE
Coil,electrical
Power Paragon, Inc. Dba Power Magnetics Div Power Magnetics
Cross-Reference Index
Part NumberManufacturer
504-2-8 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA)
Related Parts
3110-00-156-5095INTERCHANGEABLE
BEARING,BALL,ANNULAR
118031-1
3030-00-294-9836INTERCHANGEABLE
BELT,V
3455-00-531-1327INTERCHANGEABLE
REAMER,MACHINE
19636
4730-01-011-4427INTERCHANGEABLE
PLUG,PIPE,MAGNETIC
70120
6145-01-038-9725INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
5306-01-517-9292INTERCHANGEABLE
BOLT,SHOULDER
03-19649-00
5331-01-589-8183INTERCHANGEABLE
O-RING
504-28
5950-01-597-1178INTERCHANGEABLE
COIL,ELECTRICAL
50428

Frequently Asked Questions

What is NSN 5945-00-321-0800?

NSN 5945-00-321-0800 is a Relay,electromagnetic, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-321-0800?

NSN 5945-00-321-0800 has 1 cross-referenced part number: 504-2-8 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc).

What NSN replaces 5945-00-321-0800?

There are 8 known substitutes for 5945-00-321-0800: 3110-00-156-5095, 3030-00-294-9836, 3455-00-531-1327 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 504-2-8?

Key specifications for 504-2-8: Overall Length: 3.938 INCHES NOMINAL IN; Overall Height: 1.078 INCHES NOMINAL IN; Nominal Thread Size: 0.164 INCHES SINGLE MOUNTING FACILITY IN; Center to Center Distance Between Mounting Facilities Parallel to Width: 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 19 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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