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2158445G1 — SUPPORT RING,ANTENNA

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2158445G1: SUPPORT RING,ANTENNA.

The SUPPORT RING,ANTENNA is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_length: 1.090 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S), basic_shape_style: CYLINDRICAL W/FLARED END, surface_treatment: CHROMATE, large_end_diameter: 5.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-00-412-3294, 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
2158445G1
NSN: 5985-00-412-3294
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 28527 — L3HARRIS TECHNOLOGIES, INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_length1.090 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
basic_shape_styleCYLINDRICAL W/FLARED END
surface_treatmentCHROMATE
large_end_diameter5.000 INCHES NOMINAL IN
mounting_hole_typePLAIN
small_end_diameter3.000 INCHES NOMINAL IN
mounting_hole_diameter0.204 INCHES NOMINAL IN
end_item_identificationAS-2557A/G ANTENNA A
mounting_facility_quantity8
mounting_facility_circle_radius5.000 INCHES NOMINAL IN
NSN5985-00-412-3294
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SUPPORT RING,ANTENNA TITLE COMPONENT PN 2158445G1 MFR SUPPORT RING,ANTENNA
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 8
•
MOUNTING FACILITY CIRCLE RADIUS: 5.000 INCHES NOMINAL IN
•
MOUNTING METHOD: UNTHREADED HOLE(S)
•
LARGE END DIAMETER: 5.000 INCHES NOMINAL IN
•
MOUNTING HOLE DIAMETER: 0.204 INCHES NOMINAL IN
•
BASIC SHAPE STYLE: CYLINDRICAL W/FLARED END
•
SMALL END DIAMETER: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY QUANTITY8
MOUNTING FACILITY CIRCLE RADIUS5.000 INCHES NOMINAL IN
MOUNTING METHODUNTHREADED HOLE(S)
LARGE END DIAMETER5.000 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.204 INCHES NOMINAL IN
OVERALL LENGTH1.090 INCHES NOMINAL IN
BASIC SHAPE STYLECYLINDRICAL W/FLARED END
SMALL END DIAMETER3.000 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE
END ITEM IDENTIFICATIONAS-2557A/G ANTENNA A
OTHER ITEMS IN FSC 5985 — Antennas, Waveguides, and Related Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5985-00-001-1854 5985-00-001-1862 5985-00-001-1869 5985-00-001-1870 5985-00-001-1871 5985-00-001-1874 5985-00-001-1875 5985-00-001-1876
SUBSTITUTES & CROSS-REFERENCES 1
2158445G001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 2158445G1?
2158445G1 is a SUPPORT RING,ANTENNA.
What parts can replace 2158445G1?
There is 1 known substitute for 2158445G1: 2158445G001. Substitute compatibility should be verified for your specific system.
What is the NSN for 2158445G1?
2158445G1 is cataloged in the U.S. Government catalog under NSN 5985-00-412-3294. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.