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21308-03 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

21308-03: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, flange_width: 0.1250 INCHES NOMINAL IN, overall_length: 1.3750 INCHES NOMINAL IN, body_inside_diameter: 0.5000 INCHES NOMINAL IN, end_to_flange_distance: 0.1870 INCHES NOMINAL IN, flange_outside_diameter: 1.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-294-0261, 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
21308-03
NSN: 3120-01-294-0261
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 06YY5 — THALES TRAINING & SIMULATION INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
flange_width0.1250 INCHES NOMINAL IN
overall_length1.3750 INCHES NOMINAL IN
body_inside_diameter0.5000 INCHES NOMINAL IN
end_to_flange_distance0.1870 INCHES NOMINAL IN
flange_outside_diameter1.5000 INCHES NOMINAL IN
NSN3120-01-294-0261
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 21308-03 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE OUTSIDE DIAMETER: 1.5000 INCHES NOMINAL IN
•
END TO FLANGE DISTANCE: 0.1870 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.5000 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.1250 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER1.5000 INCHES NOMINAL IN
END TO FLANGE DISTANCE0.1870 INCHES NOMINAL IN
OVERALL LENGTH1.3750 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.5000 INCHES NOMINAL IN
FLANGE WIDTH0.1250 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 2024 OVERALL
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 21308-03?
21308-03 is a BEARING,SLEEVE.
What is the NSN for 21308-03?
21308-03 is cataloged in the U.S. Government catalog under NSN 3120-01-294-0261. 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.