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3120-A121-9924 — Technical Data Sheet

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— · 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 BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, corner_shape: SQUARE OUTSIDE LEFT CORNER, flange_width: 0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN, overall_length: 0.6050 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, EXTERNAL FLANGE ONE END. This part is cataloged in the Federal Logistics Information System under NSN 3120-01-162-5770, 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
3120-A121-9924
NSN: 3120-01-162-5770
FSC: 3120
CAGE: 13873 — DLA AVIATION ENGINEERING DIV DEPARTMENT OF DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
corner_shapeSQUARE OUTSIDE LEFT CORNER
flange_width0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
overall_length0.6050 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, EXTERNAL FLANGE ONE END
surface_treatmentCADMIUM AND TITANIUM OR PASSIVATE OVERALL
body_inside_diameter0.5400 INCHES MINIMUM AND 0.5450 INCHES MAXIMUM IN
body_outside_diameter0.6888 INCHES MINIMUM AND 0.6893 INCHES MAXIMUM IN
flange_outside_diameter0.9500 INCHES NOMINAL IN
material_document_and_classificationAMS 5643,17-4 PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationF-T402,FSCM 77751 MFR REF SINGLE TREATMENT RESPONSE OR Z-R901 SZ,FSCM 77751 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN3120-01-162-5770
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3120-A121-9924 · 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: CHAMFERED OUTSIDE RIGHT CORNER
•
FLANGE WIDTH: 0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.6888 INCHES MINIMUM AND 0.6893 INCHES MAXIMUM IN
•
FLANGE OUTSIDE DIAMETER: 0.9500 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.5400 INCHES MINIMUM AND 0.5450 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPECHAMFERED OUTSIDE RIGHT CORNER
CORNER SHAPECHAMFERED INSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
FLANGE WIDTH0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
OVERALL LENGTH0.6050 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.6888 INCHES MINIMUM AND 0.6893 INCHES MAXIMUM IN
FLANGE OUTSIDE DIAMETER0.9500 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.5400 INCHES MINIMUM AND 0.5450 INCHES MAXIMUM IN
MATERIALSTEEL COMP 630 OVERALL
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
HS69824-6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
69824-6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
190936InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3120-A121-9924?
3120-A121-9924 is a BUSHING,SLEEVE.
What parts can replace 3120-A121-9924?
There are 3 known substitutes for 3120-A121-9924: HS69824-6, 69824-6, 190936. Substitute compatibility should be verified for your specific system.
Is 3120-A121-9924 still available?
3120-A121-9924 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: October 2026