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12M30 — BEARING HALF,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

12M30: BEARING HALF,SLEEVE.

The BEARING HALF,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DRIVE, style_designator: STRAIGHT, part_name_assigned_by_controlling_agency: LOCK PIN,HANDWHEEL. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-145-2716, 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
12M30
NSN: 3120-00-145-2716
NIINs: 001452716, 016309126
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 24047 — COOPER INDUSTRIES INC DBA COOPER TOOLS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDRIVE
style_designatorSTRAIGHT
part_name_assigned_by_controlling_agencyLOCK PIN,HANDWHEEL
NSN3120-00-145-2716
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 12M30 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
LOCKING LUG HEIGHT: 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 3.2950 INCHES MINIMUM AND 3.2955 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 3.1504 INCHES MINIMUM AND 3.1515 INCHES MAXIMUM IN
•
LOCKING LUG WIDTH: 0.2380 INCHES MINIMUM AND 0.2430 INCHES MAXIMUM IN
•
SURFACE TREATMENT: TIN OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
LOCKING LUG HEIGHT0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER3.2950 INCHES MINIMUM AND 3.2955 INCHES MAXIMUM IN
STYLE DESIGNATORHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH1.2100 INCHES MINIMUM AND 1.2200 INCHES MAXIMUM IN
BODY INSIDE DIAMETER3.1504 INCHES MINIMUM AND 3.1515 INCHES MAXIMUM IN
LOCKING LUG WIDTH0.2380 INCHES MINIMUM AND 0.2430 INCHES MAXIMUM IN
SURFACE TREATMENTTIN OVERALL
DISTANCE FROM LUG END TO END OF BEARING0.2990 INCHES MINIMUM AND 0.3061 INCHES MAXIMUM IN
MATERIALTIN ALLOY INNER LAYER
SUBSTITUTES & CROSS-REFERENCES 1
12M3Reference 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 12M30?
12M30 is a BEARING HALF,SLEEVE.
What parts can replace 12M30?
There is 1 known substitute for 12M30: 12M3. Substitute compatibility should be verified for your specific system.
What is the NSN for 12M30?
12M30 is cataloged in the U.S. Government catalog under NSN 3120-00-145-2716. 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.