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Technical Data Sheet
PartsTable / COMPONENT / 3120-2
3120-2 ✓ Verified by PartsTable
Melissa & Doug · 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

Three playful floating baby penguin toys accompany this soft 6-page bath book. Kids will love playing with their little penguins as they read the delightful story. Toys store in a mesh tube attached right to the waterproof book! This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-287-7480, 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
3120-2
NSN: 3120-00-287-7480
FSC: 3120
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
duty_typeINTERMITTENT
body_styleSTRAIGHT SHAPE, INTERNAL COUPLING
seal_width0.188 INCHES NOMINAL IN
shell_typeSOLID
constructionSOLID
corner_shapeSQUARE OUTSIDE LEFT CORNER
flange_width0.0625 INCHES NOMINAL IN
thread_class2A SINGLE MOUNTING FACILITY A
coil_quantity1
load_capacity2.0 OUNCES OZ
overall_width2.180 INCHES NOMINAL IN
NSN3120-00-287-7480
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3120-2 · Melissa & Doug ⚠ 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
•
BODY INSIDE DIAMETER: 0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.8150 INCHES MINIMUM AND 0.8160 INCHES MAXIMUM IN
•
CORNER SHAPE: ROUND LEFT FLANGE BODY CORNER
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.6270 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.8150 INCHES MINIMUM AND 0.8160 INCHES MAXIMUM IN
OVERALL LENGTH1.4375 INCHES NOMINAL IN
CORNER SHAPEROUND LEFT FLANGE BODY CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIALCOPPER ALLOY OVERALL
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
MATERIALOIL LUBRICATING LUBRICATION
CORNER SHAPESQUARE INSIDE RIGHT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
A1232-4Interchangeable
interchangeable cross-reference
interchangeable
AA1232-4Interchangeable
interchangeable cross-reference
interchangeable
50-30-5Interchangeable
interchangeable cross-reference
interchangeable
T901-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-5687DInterchangeable
interchangeable cross-reference
interchangeable
SL873-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3120-2?
3120-2 is a CONNECTOR,PLUG,ELECTRICAL manufactured by Melissa & Doug.
What parts can replace 3120-2?
There are 25 known substitutes for 3120-2: A1232-4, AA1232-4, 50-30-5 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3120-2?
3120-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-287-7480. 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