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Technical Data Sheet
PartsTable / COMPONENT / MS17811-1
MS17811-1 ✓ 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,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 0.2520 INCHES MINIMUM AND 0.2570 INCHES MAXIMUM IN, material: STEEL COMP 1020 OVERALL, corner_shape: SQUARE ALL CORNERS, surface_finish: 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER, hardness_rating: 58.0 ROCKWELL C MINIMUM OVERALL, outside_diameter: 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-828-4550, 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
MS17811-1
NSN: 3120-00-828-4550
FSC: 3120
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
diameter0.2520 INCHES MINIMUM AND 0.2570 INCHES MAXIMUM IN
materialSTEEL COMP 1020 OVERALL
corner_shapeSQUARE ALL CORNERS
surface_finish125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
hardness_rating58.0 ROCKWELL C MINIMUM OVERALL
outside_diameter0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
style_designatorROUND
features_providedCASEHARDENED
overall_thickness0.0920 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN
surface_conditionGROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN3120-00-828-4550
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MS17811-1 · 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
•
HARDNESS RATING: 58.0 ROCKWELL C MINIMUM OVERALL
•
FEATURES PROVIDED: CASEHARDENED
•
SURFACE FINISH: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1020 OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE CONDITION: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING58.0 ROCKWELL C MINIMUM OVERALL
FEATURES PROVIDEDCASEHARDENED
SURFACE FINISH125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH16.0 MICROINCHES LEFT SIDE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1020 OVERALL
CORNER SHAPESQUARE ALL CORNERS
SURFACE CONDITIONGROUND
SURFACE FINISH16.0 MICROINCHES RIGHT SIDE
SURFACE FINISH125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
14551102 PIECEInterchangeable
interchangeable cross-reference
interchangeable
MS17811Interchangeable
interchangeable cross-reference
interchangeable
MS17811-11Interchangeable
interchangeable cross-reference
interchangeable
MS17811-17Interchangeable
interchangeable cross-reference
interchangeable
MS17811-8Interchangeable
interchangeable cross-reference
interchangeable
MS17811-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS17811-1?
MS17811-1 is a BEARING,WASHER,THRUST.
What parts can replace MS17811-1?
There are 14 known substitutes for MS17811-1: 14551102 PIECE, MS17811, MS17811-11 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS17811-1?
MS17811-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-828-4550. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026