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416821-20FF — BALL,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

416821-20FF: BALL,BEARING.

The BALL,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: F.E. BEARING SIZE 305 TYPE 1 CLASS B GRADE 00 CLASS 3 INTERNAL FIT, end_item_identification: MOTOR ALTERNATING CURRENT, material_document_and_classification: FF-B-171 FED SPEC ALL MATERIAL RESPONSES OVERALL.

This part is cataloged in the U.S. Government catalog under NSN 3110-01-561-5328, 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
416821-20FF
NSN: 3110-01-561-5328
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 71956 — RELIANCE ELECTRIC COMPANY DBA RELIANCE & DODGE BRANDS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresF.E. BEARING SIZE 305 TYPE 1 CLASS B GRADE 00 CLASS 3 INTERNAL FIT
end_item_identificationMOTOR ALTERNATING CURRENT
material_document_and_classificationFF-B-171 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN3110-01-561-5328
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 416821-20FF · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: FF-B-171 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONFF-B-171 FED SPEC ALL MATERIAL RESPONSES OVERALL
SPECIAL FEATURESF.E. BEARING SIZE 305 TYPE 1 CLASS B GRADE 00 CLASS 3 INTERNAL FIT
END ITEM IDENTIFICATIONMOTOR ALTERNATING CURRENT
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
801624-549 PC NO 66Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 416821-20FF?
416821-20FF is a BALL,BEARING.
What parts can replace 416821-20FF?
There is 1 known substitute for 416821-20FF: 801624-549 PC NO 66. Substitute compatibility should be verified for your specific system.
What is the NSN for 416821-20FF?
416821-20FF is cataloged in the U.S. Government catalog under NSN 3110-01-561-5328. 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.