PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1623-4ARelay,electromagnetic

Honeywell International, Inc Div Aerospace-Tucson · NSN 5945-00-305-5141 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-305-5141 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-305-5141. Primary manufacturer part number: 1623-4A.
Features
  • Relay,electromagnetic — FSC 5945
  • Winding Quantity: 1
  • Duty Type: CONTINUOUS
  • Terminal Type and Quantity: 12 SCREW ALL FUNCTIONS
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 4.359 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.234 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Unthreaded Mounting Hole Diameter: 0.172 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-305-5141, 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 Div Aerospace-Tucson. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-305-5141
Primary Part Number1623-4A
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHoneywell International, Inc Div Aerospace-Tucson
StatusACTIVE
Winding Quantity1
Duty TypeCONTINUOUS
Terminal Type and Quantity12 SCREW ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to Length4.359 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Width2.234 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Unthreaded Mounting Hole Diameter0.172 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Pile-Up Main Contact Form Arrangement5B
Coil Quantity1
Environmental ProtectionDUSTPROOF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5962-00-272-9506SN7427N INTERCHANGEABLE
Microcircuit,digital
Texas Instruments Incorporated
5950-00-853-8490763-1545-001 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3020-01-107-4035 INTERCHANGEABLE
Plate,transmission
3120-01-195-5923 INTERCHANGEABLE
Bushing,sleeve
6515-01-590-728002.205.145 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
1623-4A Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
1623-4 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
1623-4A PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
1623-4 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
1623-4 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
Related Parts
5962-00-272-9506INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SN7427N
5950-00-853-8490INTERCHANGEABLE
COIL,RADIO FREQUENCY
763-1545-001
3020-01-107-4035INTERCHANGEABLE
PLATE,TRANSMISSION
3120-01-195-5923INTERCHANGEABLE
BUSHING,SLEEVE
6515-01-590-7280INTERCHANGEABLE
SCREW,BONE
02.205.145

Frequently Asked Questions

What is NSN 5945-00-305-5141?

NSN 5945-00-305-5141 is a Relay,electromagnetic, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-305-5141?

NSN 5945-00-305-5141 has 5 cross-referenced part numbers: 1623-4A (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 1623-4 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems), 1623-4A (Honeywell International, Inc Div Aerospace-Tucson), 1623-4 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 1623-4 (Honeywell International, Inc Div Aerospace-Tucson).

What NSN replaces 5945-00-305-5141?

There are 5 known substitutes for 5945-00-305-5141: 5962-00-272-9506, 5950-00-853-8490, 3020-01-107-4035 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1623-4A?

Key specifications for 1623-4A: Overall Height: 5.688 INCHES NOMINAL IN; Winding Quantity: 1; Overall Width: 2.938 INCHES NOMINAL IN; Duty Type: CONTINUOUS. 14 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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