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SI-9021 — RETAINER,ELECTRON TUBE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

SI-9021: RETAINER,ELECTRON TUBE.

The RETAINER,ELECTRON TUBE is a the manufacturer industrial component. Key specifications include overall_width: 2.062 INCHES NOMINAL IN, overall_height: 0.188 INCHES NOMINAL IN, overall_length: 2.500 INCHES NOMINAL IN, style_designator: FLANGE HOLD DOWN, surface_treatment: CHROMIUM, unthreaded_mounting_hole_diameter: 0.208 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. This part is cataloged in the U.S.

Government catalog under NSN 5960-00-615-9907, 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
SI-9021
NSN: 5960-00-615-9907
FSC: 5960 — Electron Tubes and Associated Hardware
CAGE: 55097 — SHILOH INDUSTRIES INC (USA)
SPECIFICATIONS
overall_width2.062 INCHES NOMINAL IN
overall_height0.188 INCHES NOMINAL IN
overall_length2.500 INCHES NOMINAL IN
style_designatorFLANGE HOLD DOWN
surface_treatmentCHROMIUM
unthreaded_mounting_hole_diameter0.208 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
mounting_facility_type_and_quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
accommodated_item_securing_device_typeSPRING CLIP
eia_electron_tube_envelope_accommodatedT5 1-2
distance_between_mounting_facility_centers0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY FIRST CENTER GROUP IN
surface_treatment_document_and_classificationMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5960-00-615-9907
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,ELECTRON TUBE TITLE COMPONENT PN SI-9021 MFR RETAINER,ELECTRON TUBE
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
•
EIA ELECTRON TUBE ENVELOPE ACCOMMODATED: T5 1-2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.208 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
•
STYLE DESIGNATOR: FLANGE HOLD DOWN
•
ACCOMMODATED ITEM SECURING DEVICE TYPE: SPRING CLIP
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY TYPE AND QUANTITY4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
OVERALL HEIGHT0.188 INCHES NOMINAL IN
EIA ELECTRON TUBE ENVELOPE ACCOMMODATEDT5 1-2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE
UNTHREADED MOUNTING HOLE DIAMETER0.208 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
STYLE DESIGNATORFLANGE HOLD DOWN
OVERALL LENGTH2.500 INCHES NOMINAL IN
ACCOMMODATED ITEM SECURING DEVICE TYPESPRING CLIP
OVERALL WIDTH2.062 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING FACILITY CENTERS0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY FIRST CENTER GROUP IN
OTHER ITEMS IN FSC 5960 — Electron Tubes and Associated Hardware
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5960-00-001-1620 5960-00-001-1632 5960-00-001-2995 5960-00-001-2997 5960-00-001-3039 5960-00-001-3099 5960-00-001-4686 5960-00-001-7279
SUBSTITUTES & CROSS-REFERENCES 3
DM-976Reference document
Same NSN cross-reference
Reference document — Secondary reference
SC-B-104832Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
605301-422Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SI-9021?
SI-9021 is a RETAINER,ELECTRON TUBE.
What parts can replace SI-9021?
There are 3 known substitutes for SI-9021: DM-976, SC-B-104832, 605301-422. Substitute compatibility should be verified for your specific system.
What is the NSN for SI-9021?
SI-9021 is cataloged in the U.S. Government catalog under NSN 5960-00-615-9907. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.