PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1821-1Relay,electromagnetic

Airpax Corporation Llc Dba Airpax Corporation Llc · NSN 5945-00-502-5868 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-502-5868 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-502-5868. Primary manufacturer part number: 1821-1.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Terminal Type and Quantity: 14 PIN ALL FUNCTIONS
  • Winding DC Resistance Rating: 290.0 OHMS NOMINAL SINGLE WINDING
  • Nominal Operating Current Rating and Type: 80.0 MILLIAMPERES DC SINGLE WINDING
  • Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle: 2.968 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Duty Type: CONTINUOUS
  • Operating Voltage Rating and Type at Specified Temp: 24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-502-5868, 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 Airpax Corporation Llc Dba Airpax Corporation Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Active.

Technical Specifications
ParameterValue
NSN5945-00-502-5868
Primary Part Number1821-1
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerAirpax Corporation Llc Dba Airpax Corporation Llc
StatusACTIVE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Winding DC Resistance Rating290.0 OHMS NOMINAL SINGLE WINDING
Nominal Operating Current Rating and Type80.0 MILLIAMPERES DC SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle2.968 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Duty TypeCONTINUOUS
Operating Voltage Rating and Type at Specified Temp24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.144 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts115.0 AC
Coil Quantity1
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC RESISTIVE LOAD
Winding Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
2925-00-144-3203A13050 INTERCHANGEABLE
Retainer,inner Bear
Inrcore, Llc Div Inrcore
5360-00-511-122918211 INTERCHANGEABLE
Spring,helical,compression
Parker-Hannifin Corporation Dba Control Systems Division
5905-00-522-5805 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
4520-01-045-0835 INTERCHANGEABLE
Plate,cover
4730-01-061-559918211 INTERCHANGEABLE
Coupling Half,self-Sealing
Templeton Kenly and Co Inc
5998-01-144-5566 INTERCHANGEABLE
Circuit Card Assembly
5305-01-362-285618211 INTERCHANGEABLE
Screw,cap,hexagon Head
Hyster-Yale Group, Inc.
6240-01-475-499518211 INTERCHANGEABLE
Lamp,fluorescent
Technical Consumer Products, Inc.
5330-01-518-782418211 INTERCHANGEABLE
Gasket
Itw Food Equipment Group Llc Dba Gaylord Industries
Cross-Reference Index
Part NumberManufacturer
1821-1 PRIMARY Airpax Corporation Llc Dba Airpax Corporation Llc (USA)
L218324-2 Raytheon Company Dba Raytheon Co (USA)
1821-1 North American Philips Corp (USA)
XENC-2081 Precision Switching Inc (USA)
Related Parts
2925-00-144-3203INTERCHANGEABLE
RETAINER,INNER BEAR
A13050
5360-00-511-1229INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
18211
5905-00-522-5805INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
4520-01-045-0835INTERCHANGEABLE
PLATE,COVER
4730-01-061-5599INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
18211
5998-01-144-5566INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5305-01-362-2856INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
18211
6240-01-475-4995INTERCHANGEABLE
LAMP,FLUORESCENT
18211
5330-01-518-7824INTERCHANGEABLE
GASKET
18211

Frequently Asked Questions

What is NSN 5945-00-502-5868?

NSN 5945-00-502-5868 is a Relay,electromagnetic, manufactured by Airpax Corporation Llc Dba Airpax Corporation Llc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-502-5868?

NSN 5945-00-502-5868 has 4 cross-referenced part numbers: 1821-1 (Airpax Corporation Llc Dba Airpax Corporation Llc), L218324-2 (Raytheon Company Dba Raytheon Co), 1821-1 (North American Philips Corp), XENC-2081 (Precision Switching Inc).

What NSN replaces 5945-00-502-5868?

There are 9 known substitutes for 5945-00-502-5868: 2925-00-144-3203, 5360-00-511-1229, 5905-00-522-5805 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1821-1?

Key specifications for 1821-1: Overall Length: 3.500 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Terminal Type and Quantity: 14 PIN ALL FUNCTIONS; End Item Identification: JOINT SURVEILLANCE SYS (JSS)/REGION OPS CTRL CENTER (ROCC). 18 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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