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1653-645977 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

1653-645977: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, hole_diameter: 0.2813 INCHES NOMINAL FIRST IN, overall_length: 1.0000 INCHES NOMINAL IN, style_designator: SPLIT, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-001-7792, 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
1653-645977
NSN: 3120-00-001-7792
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 08752 — PARKER-HANNIFIN CORP FLUIDPOWER GROUP MOBILE HYDRAULICS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
hole_diameter0.2813 INCHES NOMINAL FIRST IN
overall_length1.0000 INCHES NOMINAL IN
style_designatorSPLIT, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.5000 INCHES NOMINAL IN
body_outside_diameter0.6250 INCHES NOMINAL IN
antirotation/lubrication_type_and_quantity4 HOLE
NSN3120-00-001-7792
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1653-645977 · 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: 0.6250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPLIT, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.5000 INCHES NOMINAL IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 4 HOLE
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.2813 INCHES NOMINAL FIRST IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.6250 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH1.0000 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.5000 INCHES NOMINAL IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY4 HOLE
MATERIALSTEEL OVERALL
HOLE DIAMETER0.2813 INCHES NOMINAL FIRST IN
SUBSTITUTES & CROSS-REFERENCES 1
645977Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1653-645977?
1653-645977 is a BUSHING,SLEEVE.
What parts can replace 1653-645977?
There is 1 known substitute for 1653-645977: 645977. Substitute compatibility should be verified for your specific system.
What is the NSN for 1653-645977?
1653-645977 is cataloged in the U.S. Government catalog under NSN 3120-00-001-7792. 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.