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PartsTable / COMPONENT / 4557A
4557A ✓ 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 RETAINER,ELECTRICAL SWITCH is a the manufacturer industrial component. Key specifications include body_width: 1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN, body_height: 1.937 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN, body_length: 1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, overall_height: 2.968 INCHES MAXIMUM IN, mounting_method: THREADED STUD(S) SINGLE GROUP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-023-1910, 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
4557A
NSN: 5950-00-023-1910
FSC: 5950
CAGE: 21811 — DEK INDUSTRIES INC DIV OF TECHNOLOGY RESEARCH INC (USA)
SPECIFICATIONS
body_width1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
body_height1.937 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN
body_length1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
overall_height2.968 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating60.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
winding_power_rating750.0 MILLIWATTS SINGLE COMPONENT SINGLE SECONDARY
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5950-00-023-1910
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,ELECTRICAL SWITCH TITLE COMPONENT PN 4557A MFR RETAINER,ELECTRICAL SW
KEY FEATURES
•
BODY LENGTH: 1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
•
WINDING OPERATING VOLTAGE: 100.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
•
BODY HEIGHT: 1.937 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
FREQUENCY RATING: 60.0 HERTZ NOMINAL SINGLE COMPONENT
•
NOMINAL THREAD SIZE: 0.138 INCHES SINGLE GROUP IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY LENGTH1.437 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
WINDING OPERATING VOLTAGE100.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
BODY HEIGHT1.937 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
OVERALL HEIGHT2.968 INCHES MAXIMUM IN
RELIABILITY INDICATORNOT ESTABLISHED
FREQUENCY RATING60.0 HERTZ NOMINAL SINGLE COMPONENT
NOMINAL THREAD SIZE0.138 INCHES SINGLE GROUP IN
THREAD QUANTITY PER INCH32 SINGLE GROUP
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
48548XL48510XLInterchangeable
interchangeable cross-reference
interchangeable
20010-1Interchangeable
interchangeable cross-reference
interchangeable
296117Interchangeable
interchangeable cross-reference
interchangeable
3V630Interchangeable
interchangeable cross-reference
interchangeable
001531Interchangeable
interchangeable cross-reference
interchangeable
68B618000-231Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4557A?
4557A is a RETAINER,ELECTRICAL SWITCH.
What parts can replace 4557A?
There are 22 known substitutes for 4557A: 48548XL48510XL, 20010-1, 296117 and 19 more. Substitute compatibility should be verified for your specific system.
Is 4557A still available?
4557A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026