PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

421291Relay,electromagnetic

Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis · NSN 5945-00-502-4146 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-502-4146 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-502-4146. Primary manufacturer part number: 421291.
Features
  • Relay,electromagnetic — FSC 5945
  • Duty Type: CONTINUOUS
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Environmental Protection: HERMETIC
  • Coil Quantity: 2
  • Winding Quantity: 2
  • Main Contact Load Current Rating at Maximum Rated Voltage: 0.1 AMPERES DC RESISTIVE LOAD
  • Pile-Up Main Contact Form Arrangement: 4C
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-502-4146, 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 Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-502-4146
Primary Part Number421291
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis
StatusACTIVE
Duty TypeCONTINUOUS
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Coil Quantity2
Winding Quantity2
Main Contact Load Current Rating at Maximum Rated Voltage0.1 AMPERES DC RESISTIVE LOAD
Pile-Up Main Contact Form Arrangement4C
Main Contact Maximum Voltage Rating in Volts115.0 DC
Winding DC Resistance Rating675.0 OHMS NOMINAL ALL WINDINGS
Unthreaded Mounting Hole Diameter0.141 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity16 PIN ALL FUNCTIONS
Nominal Operating Current Rating and Type40.0 MILLIAMPERES DC ALL WINDINGS
Center to Center Distance Between Mounting Facilities Parallel to Width1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp27.5 VOLTS DC 25 DEG CELSIUS ALL WINDINGS
Center to Center Distance Between Mounting Facilities Parallel to Length1.203 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6145-00-253-261537-1122-1 INTERCHANGEABLE
Cable,radio Frequency
The Boeing Company Div Defense
5950-01-438-9923421291 INTERCHANGEABLE
Transformer,power
Dictaphone Corporation
6130-01-601-5482PBA1500F-24 INTERCHANGEABLE
Power Supply
Cosel Usa Inc
Cross-Reference Index
Part NumberManufacturer
421291 PRIMARY Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis (USA)
Related Parts
6145-00-253-2615INTERCHANGEABLE
CABLE,RADIO FREQUENCY
37-1122-1
5950-01-438-9923INTERCHANGEABLE
TRANSFORMER,POWER
421291
6130-01-601-5482INTERCHANGEABLE
POWER SUPPLY
PBA1500F-24

Frequently Asked Questions

What is NSN 5945-00-502-4146?

NSN 5945-00-502-4146 is a Relay,electromagnetic, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-502-4146?

NSN 5945-00-502-4146 has 1 cross-referenced part number: 421291 (Honeywell International Inc. Dba Honeywell International Div Aerospace-Minneapolis).

What NSN replaces 5945-00-502-4146?

There are 3 known substitutes for 5945-00-502-4146: 6145-00-253-2615, 5950-01-438-9923, 6130-01-601-5482. Verify interchangeability with system specifications before substitution.

What are the specifications of 421291?

Key specifications for 421291: Duty Type: CONTINUOUS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Environmental Protection: HERMETIC; Coil Quantity: 2. 20 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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