PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 261-1-13
261-1-13 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include end_item_identification: RADARD,SERIES. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-288-2807, 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
261-1-13
NSN: 3120-00-288-2807
FSC: 3120
CAGE: 81782 — ALMON JOHNSON LTD (USA)
SPECIFICATIONS
end_item_identificationRADARD,SERIES
NSN3120-00-288-2807
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 261-1-13 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A COMPOSITION
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: OIL LUBRICATING LUBRICATION
•
BODY INSIDE DIAMETER: 0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPESQUARE ALL CORNERS
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A COMPOSITION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALOIL LUBRICATING LUBRICATION
MATERIALCOPPER ALLOY OVERALL
BODY INSIDE DIAMETER0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN
OVERALL LENGTH0.4375 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.5020 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
679121Interchangeable
interchangeable cross-reference
interchangeable
A5074Interchangeable
interchangeable cross-reference
interchangeable
28139Interchangeable
interchangeable cross-reference
interchangeable
7371312Interchangeable
interchangeable cross-reference
interchangeable
230960Interchangeable
Lockplate,2nd Stage
interchangeable
230906Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 261-1-13?
261-1-13 is a BEARING,SLEEVE.
What parts can replace 261-1-13?
There are 16 known substitutes for 261-1-13: 679121, A5074, 28139 and 13 more. Substitute compatibility should be verified for your specific system.
Is 261-1-13 still available?
261-1-13 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026