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COM-12 — SHAFT,SHOULDERED

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

COM-12: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL RACE INSERT, bore_diameter: 0.7500 INCHES NOMINAL IN, special_features: LUBRICATION HOLE, style_designator: WITHOUT INSERT OR LINER, inner_member_width: 1.7500 INCHES NOMINAL IN, outer_member_width: 0.5930 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-384-5676, 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
COM-12
NSN: 3120-01-384-5676
NIINs: 013845676, 016429061
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 56644 — TIMKEN AURORA BEARING COMPANY (USA)
SPECIFICATIONS
materialSTEEL RACE INSERT
bore_diameter0.7500 INCHES NOMINAL IN
special_featuresLUBRICATION HOLE
style_designatorWITHOUT INSERT OR LINER
inner_member_width1.7500 INCHES NOMINAL IN
outer_member_width0.5930 INCHES NOMINAL IN
end_item_identificationJ85 CAN-15 ENGINE, THRUST STAND EAC 19A01
outer_member_outside_diameter1.4375 INCHES NOMINAL IN
NSN3120-01-384-5676
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: COM-12 · 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
•
INNER MEMBER WIDTH: 1.7500 INCHES NOMINAL IN
•
OUTER MEMBER WIDTH: 0.5930 INCHES NOMINAL IN
•
STYLE DESIGNATOR: WITHOUT INSERT OR LINER
•
BORE DIAMETER: 0.7500 INCHES NOMINAL IN
•
MATERIAL: STEEL RACE INSERT
•
OUTER MEMBER OUTSIDE DIAMETER: 1.4375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INNER MEMBER WIDTH1.7500 INCHES NOMINAL IN
OUTER MEMBER WIDTH0.5930 INCHES NOMINAL IN
STYLE DESIGNATORWITHOUT INSERT OR LINER
SPECIAL FEATURESLUBRICATION HOLE
END ITEM IDENTIFICATIONJ85 CAN-15 ENGINE, THRUST STAND EAC 19A01
BORE DIAMETER0.7500 INCHES NOMINAL IN
MATERIALSTEEL RACE INSERT
OUTER MEMBER OUTSIDE DIAMETER1.4375 INCHES NOMINAL IN
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 COM-12?
COM-12 is a SHAFT,SHOULDERED.
What is the NSN for COM-12?
COM-12 is cataloged in the U.S. Government catalog under NSN 3120-01-384-5676. 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.