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Technical Data Sheet
PartsTable / COMPONENT / 1623-4A
1623-4A ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include duty_type: CONTINUOUS, overall_width: 2.938 INCHES NOMINAL IN, overall_height: 5.688 INCHES NOMINAL IN, overall_length: 4.875 INCHES NOMINAL IN, environmental_protection: DUSTPROOF, mounting_facility_pattern: RECTANGULAR SINGLE MOUNTING FACILITY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-305-5141, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1623-4A
NSN: 5945-00-305-5141
FSC: 5945
CAGE: 83298 — ALLIED SIGNAL INC AEROSPACE EQUIPMENT SYSTEMS EATONTOWN SITE (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
coil_quantity1
overall_width2.938 INCHES NOMINAL IN
overall_height5.688 INCHES NOMINAL IN
overall_length4.875 INCHES NOMINAL IN
winding_quantity1
environmental_protectionDUSTPROOF
mounting_facility_patternRECTANGULAR SINGLE MOUNTING FACILITY
terminal_type_and_quantity12 SCREW ALL FUNCTIONS
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
NSN5945-00-305-5141
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 1623-4A MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
•
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
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT5.688 INCHES NOMINAL IN
WINDING QUANTITY1
OVERALL WIDTH2.938 INCHES NOMINAL IN
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
01-49018-53Interchangeable
interchangeable cross-reference
interchangeable
57-001-7427Interchangeable
interchangeable cross-reference
interchangeable
16234Interchangeable
interchangeable cross-reference
interchangeable
763-1545-001Interchangeable
interchangeable cross-reference
interchangeable
12638Interchangeable
interchangeable cross-reference
interchangeable
12642Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1623-4A?
1623-4A is a RELAY,ELECTROMAGNETIC.
What parts can replace 1623-4A?
There are 9 known substitutes for 1623-4A: 01-49018-53, 57-001-7427, 16234 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1623-4A?
1623-4A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-305-5141. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026