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521-1311200PC106 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

521-1311200PC106: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OUTER LAYER, corner_shape: SQUARE ALL CORNERS, overall_length: 0.2500 INCHES NOMINAL IN, style_designator: SPLIT, PLAIN, NO OUTSIDE FLANGES, surface_treatment: TIN OUTER LAYER, body_inside_diameter: 0.3750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-917-7722, 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
521-1311200PC106
NSN: 3120-00-917-7722
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OUTER LAYER
corner_shapeSQUARE ALL CORNERS
overall_length0.2500 INCHES NOMINAL IN
style_designatorSPLIT, PLAIN, NO OUTSIDE FLANGES
surface_treatmentTIN OUTER LAYER
body_inside_diameter0.3750 INCHES NOMINAL IN
body_outside_diameter0.4688 INCHES NOMINAL IN
NSN3120-00-917-7722
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 521-1311200PC106 · 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
•
BODY OUTSIDE DIAMETER: 0.4688 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPLIT, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.3750 INCHES NOMINAL IN
•
SURFACE TREATMENT: TIN OUTER LAYER
•
MATERIAL: COPPER ALLOY AND LEAD AND PLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.4688 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.2500 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.3750 INCHES NOMINAL IN
SURFACE TREATMENTTIN OUTER LAYER
MATERIALCOPPER ALLOY AND LEAD AND PLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER
MATERIALCOPPER ALLOY INTERMEDIATE LAYER
MATERIALSTEEL OUTER LAYER
SUBSTITUTES & CROSS-REFERENCES 2
55724-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
137-517-9354Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 521-1311200PC106?
521-1311200PC106 is a BEARING,SLEEVE.
What parts can replace 521-1311200PC106?
There are 2 known substitutes for 521-1311200PC106: 55724-7, 137-517-9354. Substitute compatibility should be verified for your specific system.
What is the NSN for 521-1311200PC106?
521-1311200PC106 is cataloged in the U.S. Government catalog under NSN 3120-00-917-7722. 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.