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CA21208C-4-2 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

CA21208C-4-2: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, flange_width: 0.0410 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN, overall_length: 0.1730 INCHES NOMINAL IN, body_inside_diameter: 0.2800 INCHES MINIMUM AND 0.2830 INCHES MAXIMUM IN, body_outside_diameter: 0.3070 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN, flange_outside_diameter: 0.5300 INCHES MINIMUM AND 0.5400 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-237-9433, 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
CA21208C-4-2
NSN: 3120-01-237-9433
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
flange_width0.0410 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN
overall_length0.1730 INCHES NOMINAL IN
body_inside_diameter0.2800 INCHES MINIMUM AND 0.2830 INCHES MAXIMUM IN
body_outside_diameter0.3070 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN
flange_outside_diameter0.5300 INCHES MINIMUM AND 0.5400 INCHES MAXIMUM IN
interior_flange_hole_diameter0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
NSN3120-01-237-9433
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: CA21208C-4-2 · 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
•
INTERIOR FLANGE HOLE DIAMETER: 0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
•
FLANGE OUTSIDE DIAMETER: 0.5300 INCHES MINIMUM AND 0.5400 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.3070 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 0.2800 INCHES MINIMUM AND 0.2830 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.0410 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS
INTERIOR FLANGE HOLE DIAMETER0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
FLANGE OUTSIDE DIAMETER0.5300 INCHES MINIMUM AND 0.5400 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.3070 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM IN
OVERALL LENGTH0.1730 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.2800 INCHES MINIMUM AND 0.2830 INCHES MAXIMUM IN
FLANGE WIDTH0.0410 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN
MATERIALSTEEL COMP 304 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 1
GB540CL4-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 CA21208C-4-2?
CA21208C-4-2 is a BUSHING,SLEEVE.
What parts can replace CA21208C-4-2?
There is 1 known substitute for CA21208C-4-2: GB540CL4-2. Substitute compatibility should be verified for your specific system.
What is the NSN for CA21208C-4-2?
CA21208C-4-2 is cataloged in the U.S. Government catalog under NSN 3120-01-237-9433. 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.