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2531313 — BEARING HALF,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2531313: BEARING HALF,SLEEVE.

The BEARING HALF,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 955 OVERALL, overall_length: 3.125 INCHES NOMINAL IN, style_designator: HALF SLEEVE, EXTERNAL FLANGES BOTH ENDS, left_flange_width: 2.125 INCHES NOMINAL IN, right_flange_width: 2.125 INCHES NOMINAL IN, body_inside_diameter: 2.874 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-596-9307, 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
2531313
NSN: 3120-01-596-9307
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 955 OVERALL
overall_length3.125 INCHES NOMINAL IN
style_designatorHALF SLEEVE, EXTERNAL FLANGES BOTH ENDS
left_flange_width2.125 INCHES NOMINAL IN
right_flange_width2.125 INCHES NOMINAL IN
body_inside_diameter2.874 INCHES NOMINAL IN
left_flange_outside_diameter2.125 INCHES NOMINAL IN
right_flange_outside_diameter2.125 INCHES NOMINAL IN
material_document_and_classificationUNABLE TO DECODE
NSN3120-01-596-9307
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2531313 · 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
•
RIGHT FLANGE WIDTH: 2.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HALF SLEEVE, EXTERNAL FLANGES BOTH ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: UNABLE TO DECODE
•
BODY INSIDE DIAMETER: 2.874 INCHES NOMINAL IN
•
RIGHT FLANGE OUTSIDE DIAMETER: 2.125 INCHES NOMINAL IN
•
LEFT FLANGE OUTSIDE DIAMETER: 2.125 INCHES NOMINAL IN
•
LEFT FLANGE WIDTH: 2.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
RIGHT FLANGE WIDTH2.125 INCHES NOMINAL IN
STYLE DESIGNATORHALF SLEEVE, EXTERNAL FLANGES BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONUNABLE TO DECODE
OVERALL LENGTH3.125 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.874 INCHES NOMINAL IN
RIGHT FLANGE OUTSIDE DIAMETER2.125 INCHES NOMINAL IN
LEFT FLANGE OUTSIDE DIAMETER2.125 INCHES NOMINAL IN
LEFT FLANGE WIDTH2.125 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 955 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2531313?
2531313 is a BEARING HALF,SLEEVE.
What is the NSN for 2531313?
2531313 is cataloged in the U.S. Government catalog under NSN 3120-01-596-9307. 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.