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Technical Data Sheet
PartsTable / COMPONENT / 4B3-3
4B3-3 ✓ 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,ELECTRON TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 170, overall_width: 0.500 INCHES NOMINAL IN, overall_height: 0.450 INCHES NOMINAL IN, overall_length: 1.330 INCHES NOMINAL IN, style_designator: CRADLE WITH BASE, surface_treatment: CADMIUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-071-7486, 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
4B3-3
NSN: 5960-00-071-7486
FSC: 5960
CAGE: 07387 — BIRTCHER CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 170
overall_width0.500 INCHES NOMINAL IN
overall_height0.450 INCHES NOMINAL IN
overall_length1.330 INCHES NOMINAL IN
style_designatorCRADLE WITH BASE
surface_treatmentCADMIUM
unthreaded_mounting_hole_diameter0.078 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
mounting_facility_type_and_quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
material_document_and_classificationQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
accommodated_item_securing_device_typeFRICTION FASTENER
eia_electron_tube_envelope_accommodatedT3
distance_between_mounting_facility_centers0.297 INCHES NOMINAL SINGLE MOUNTING FACILITY FIRST CENTER GROUP IN
NSN5960-00-071-7486
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,ELECTRON TUBE TITLE COMPONENT PN 4B3-3 MFR RETAINER,ELECTRON TUBE
KEY FEATURES
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: COPPER ALLOY 170
•
STYLE DESIGNATOR: CRADLE WITH BASE
•
MOUNTING FACILITY TYPE AND QUANTITY: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.078 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.330 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM
MATERIALCOPPER ALLOY 170
STYLE DESIGNATORCRADLE WITH BASE
MOUNTING FACILITY TYPE AND QUANTITY4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
UNTHREADED MOUNTING HOLE DIAMETER0.078 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SECOND CENTER GROUP IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE
ACCOMMODATED ITEM SECURING DEVICE TYPEFRICTION FASTENER
OVERALL WIDTH0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
12515Interchangeable
interchangeable cross-reference
interchangeable
658021Interchangeable
interchangeable cross-reference
interchangeable
211WInterchangeable
interchangeable cross-reference
interchangeable
686B012817Interchangeable
interchangeable cross-reference
interchangeable
12817Interchangeable
interchangeable cross-reference
interchangeable
012817-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4B3-3?
4B3-3 is a RETAINER,ELECTRON TUBE.
What parts can replace 4B3-3?
There are 9 known substitutes for 4B3-3: 12515, 658021, 211W and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B3-3?
4B3-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-071-7486. 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