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BC21-10C — PLATE,RETAINING,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

BC21-10C: PLATE,RETAINING,BEARING.

The PLATE,RETAINING,BEARING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, flange_thickness: 0.2500 INCHES NOMINAL IN, outside_diameter: 1.6250 INCHES NOMINAL IN, style_designator: TWO FLATS, aperture_diameter: 0.5000 INCHES MINIMUM AND 0.5003 INCHES MAXIMUM IN, overall_thickness: 1.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-371-8539, 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
BC21-10C
NSN: 3110-01-371-8539
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 29440 — W. M. BERG, INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
flange_thickness0.2500 INCHES NOMINAL IN
outside_diameter1.6250 INCHES NOMINAL IN
style_designatorTWO FLATS
aperture_diameter0.5000 INCHES MINIMUM AND 0.5003 INCHES MAXIMUM IN
overall_thickness1.5000 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
mounting_hole_typeROUND, UNTHREADED
width_across_flats0.8750 INCHES NOMINAL IN
mounting_hole_diameter0.2600 INCHES NOMINAL IN
mounting_hole_arrangement_styleTHREE HOLES
distance_from_vertical_centerline_to_center_of_right_hole0.6250 INCHES NOMINAL IN
NSN3110-01-371-8539
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BC21-10C · 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
•
WIDTH ACROSS FLATS: 0.8750 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
MOUNTING HOLE ARRANGEMENT STYLE: THREE HOLES
•
OVERALL THICKNESS: 1.5000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TWO FLATS
•
MOUNTING HOLE DIAMETER: 0.2600 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.6250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.5000 INCHES MINIMUM AND 0.5003 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.8750 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
MOUNTING HOLE ARRANGEMENT STYLETHREE HOLES
OVERALL THICKNESS1.5000 INCHES NOMINAL IN
STYLE DESIGNATORTWO FLATS
MOUNTING HOLE DIAMETER0.2600 INCHES NOMINAL IN
OUTSIDE DIAMETER1.6250 INCHES NOMINAL IN
APERTURE DIAMETER0.5000 INCHES MINIMUM AND 0.5003 INCHES MAXIMUM IN
DISTANCE FROM VERTICAL CENTERLINE TO CENTER OF RIGHT HOLE0.6250 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE 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
6508607Same 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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BC21-10C?
BC21-10C is a PLATE,RETAINING,BEARING.
What parts can replace BC21-10C?
There is 1 known substitute for BC21-10C: 6508607. Substitute compatibility should be verified for your specific system.
What is the NSN for BC21-10C?
BC21-10C is cataloged in the U.S. Government catalog under NSN 3110-01-371-8539. 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.