PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C503000326Relay,electromagnetic

Kearfott Corporation Div Guidance and Navigation Division · NSN 5945-00-949-7979 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-949-7979 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-949-7979. Primary manufacturer part number: C503000326.
Features
  • Relay,electromagnetic — FSC 5945
  • Duty Type: CONTINUOUS
  • Nonpile-Up Main Contact Arrangement: 12 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.406 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Main Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Winding Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-949-7979, 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 Kearfott Corporation Div Guidance and Navigation Division. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 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
NSN5945-00-949-7979
Primary Part NumberC503000326
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerKearfott Corporation Div Guidance and Navigation Division
StatusCANCELLED
Duty TypeCONTINUOUS
Nonpile-Up Main Contact Arrangement12 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Center to Center Distance Between Mounting Facilities Parallel to Width0.406 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts28.0 DC
Winding Quantity1
Unthreaded Mounting Hole Diameter0.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Length1.734 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity38 PIN ALL FUNCTIONS
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Winding DC Resistance Rating306.0 OHMS NOMINAL SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES DC RESISTIVE LOAD
Time Delay0.01 SECONDS NOMINAL FIXED OPERATE AND RELEASE TIME
Coil Quantity1
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4720-00-017-079728432 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
5935-00-018-90785M958 INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
3020-00-059-8683 INTERCHANGEABLE
Gear,spur
5340-00-182-694416000-SS-7 INTERCHANGEABLE
Ferrule,grooved Clamp Coupling
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5910-00-489-2000 INTERCHANGEABLE
Capacitor,variable,air Dielectri
5360-00-537-93838P10-5228 INTERCHANGEABLE
Spring
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
8115-00-901-64356435 INTERCHANGEABLE
Box,shipping
Connecticut Container Corp. Dba Connecticut Container Corp
5998-00-953-403162136 INTERCHANGEABLE
Circuit Card Assembly
Magnasync/moviola Corporation Dba Magnasync/moviola Corp
6685-01-010-2045 INTERCHANGEABLE
Thermometer,indicating,capillary
5120-01-170-50885003424 INTERCHANGEABLE
Socket,wrench,face Spanner
Dept of the Army U S Army Electronics Command Night Vision Laboratory
Cross-Reference Index
Part NumberManufacturer
6435 Te Connectivity Corporation (USA)
6435 Branson Corp (USA)
62136 Te Connectivity Corporation (USA)
62136 Te Connectivity Corporation (USA)
C503000326 PRIMARY Kearfott Corporation Div Guidance and Navigation Division (USA)
C503000328 Kearfott Corporation Div Guidance and Navigation Division (USA)
6435 Te Connectivity Corporation (USA)
62136 Branson Corp (USA)
Related Parts
4720-00-017-0797INTERCHANGEABLE
HOSE,NONMETALLIC
28432
5935-00-018-9078INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5M958
3020-00-059-8683INTERCHANGEABLE
GEAR,SPUR
5340-00-182-6944INTERCHANGEABLE
FERRULE,GROOVED CLAMP COUPLING
16000-SS-7
5910-00-489-2000INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
5360-00-537-9383INTERCHANGEABLE
SPRING
8P10-5228
8115-00-901-6435INTERCHANGEABLE
BOX,SHIPPING
6435
5998-00-953-4031INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
62136
6685-01-010-2045INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5120-01-170-5088INTERCHANGEABLE
SOCKET,WRENCH,FACE SPANNER
5003424
5306-01-290-3315INTERCHANGEABLE
BOLT,MACHINE
5120-01-335-9007INTERCHANGEABLE
HANDLE,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5945-00-949-7979?

NSN 5945-00-949-7979 is a Relay,electromagnetic, manufactured by Kearfott Corporation Div Guidance and Navigation Division, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-949-7979?

NSN 5945-00-949-7979 has 8 cross-referenced part numbers: 6435 (Te Connectivity Corporation), 6435 (Branson Corp), 62136 (Te Connectivity Corporation), 62136 (Te Connectivity Corporation), C503000326 (Kearfott Corporation Div Guidance and Navigation Division) and 3 more.

What NSN replaces 5945-00-949-7979?

There are 12 known substitutes for 5945-00-949-7979: 4720-00-017-0797, 5935-00-018-9078, 3020-00-059-8683 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C503000326?

Key specifications for C503000326: Overall Width: 1.270 INCHES NOMINAL IN; Overall Height: 0.840 INCHES NOMINAL IN; Duty Type: CONTINUOUS; Nonpile-Up Main Contact Arrangement: 12 POLE, DOUBLE THROW, ONE POSITION MOMENTARY. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-949-7979 still in active supply?

NSN 5945-00-949-7979 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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