PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

32-76129-75Relay,electromagnetic

The Boeing Company Div Defense · NSN 5945-00-256-0666 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-256-0666 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-256-0666. Primary manufacturer part number: 32-76129-75.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 5 PIN ALL FUNCTIONS
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding Quantity: 1
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Main Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Time Delay: 10.00 SECONDS MAXIMUM FIXED OPERATE TIME
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-256-0666, 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 The Boeing Company Div Defense. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-256-0666
Primary Part Number32-76129-75
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusCANCELLED
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Center to Center Distance Between Mounting Facilities Parallel to Length0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts28.0 DC
Time Delay10.00 SECONDS MAXIMUM FIXED OPERATE TIME
Thread Class2A SINGLE MOUNTING FACILITY A
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Operating Voltage Rating and Type at Specified Temp20.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage5.0 MILLIAMPERES DC RESISTIVE LOAD
Environmental ProtectionHERMETIC
Nonpile-Up Main Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Coil Quantity1
Mounting Facility Type and Quantity2 THREADED STUD(S) SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6520-00-059-900840859 INTERCHANGEABLE
Band,copper,dental
Moyco Industries Inc Union Broach Div
5930-00-106-1354 INTERCHANGEABLE
Switch,rotary
2530-00-529-4029 INTERCHANGEABLE
Brake Lining Kit
5999-01-069-6536101039 INTERCHANGEABLE
Tube,filiment Inner
Bae Systems Information and Electronic Systems Integration Inc.
5999-01-086-6168 INTERCHANGEABLE
Contact,electrical
6680-01-131-783440859 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
4820-01-321-6441408575 INTERCHANGEABLE
Seat,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
8145-01-397-8721 INTERCHANGEABLE
Shipping and Storage Container,t
5945-01-471-75401-01039 INTERCHANGEABLE
Restrictor,electrical
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5310-01-492-5563101039 INTERCHANGEABLE
Nut,self-Locking,hexagon
Curt Manufacturing Llc
Cross-Reference Index
Part NumberManufacturer
32-76129-39 The Boeing Company Div Defense (USA)
1600S700 Hi-G Co Inc Sub of Nytronics Inc (USA)
4085-9 Dne Technologies, Inc (USA)
1600S-700 Te Connectivity Corporation (USA)
32-76129-75 PRIMARY The Boeing Company Div Defense (USA)
1600S-700 Te Connectivity Corporation (USA)
4085-75 Dne Technologies, Inc (USA)
1010-39 Hi-G Co Inc Sub of Nytronics Inc (USA)
Related Parts
6520-00-059-9008INTERCHANGEABLE
BAND,COPPER,DENTAL
40859
5930-00-106-1354INTERCHANGEABLE
SWITCH,ROTARY
2530-00-529-4029INTERCHANGEABLE
BRAKE LINING KIT
5999-01-069-6536INTERCHANGEABLE
TUBE,FILIMENT INNER
101039
5999-01-086-6168INTERCHANGEABLE
CONTACT,ELECTRICAL
6680-01-131-7834INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40859
4820-01-321-6441INTERCHANGEABLE
SEAT,VALVE
408575
8145-01-397-8721INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,T
5945-01-471-7540INTERCHANGEABLE
RESTRICTOR,ELECTRICAL
1-01039
5310-01-492-5563INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
101039
5998-01-544-3703INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
101039
5995-01-548-3904INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
101.039

Frequently Asked Questions

What is NSN 5945-00-256-0666?

NSN 5945-00-256-0666 is a Relay,electromagnetic, manufactured by The Boeing Company Div Defense, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-256-0666?

NSN 5945-00-256-0666 has 8 cross-referenced part numbers: 32-76129-39 (The Boeing Company Div Defense), 1600S700 (Hi-G Co Inc Sub of Nytronics Inc), 4085-9 (Dne Technologies, Inc), 1600S-700 (Te Connectivity Corporation), 32-76129-75 (The Boeing Company Div Defense) and 3 more.

What NSN replaces 5945-00-256-0666?

There are 12 known substitutes for 5945-00-256-0666: 6520-00-059-9008, 5930-00-106-1354, 2530-00-529-4029 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 32-76129-75?

Key specifications for 32-76129-75: Terminal Type and Quantity: 5 PIN ALL FUNCTIONS; Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN; Overall Height: 0.525 INCHES MAXIMUM IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-256-0666 still in active supply?

NSN 5945-00-256-0666 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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