4mm (5/32") Neodymium Sphere Magnets – N35 Grade

Key Features:

Diameter: 4mm (Approx. 5/32")
Precision Tolerance: ±0.05mm
Magnet Grade: N35
Pull Force: Approx. 0.56 lbs
Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
Magnetization: Axially magnetized (Poles on opposite sides of the sphere)

Material Description:

Our 4mm N35 spheres are designed for versatility. The 4mm diameter offers a larger surface area and easier handling than micro-spheres, while the N35 grade provides a reliable magnetic bond that is strong yet easy to separate. These spheres are the top choice for magnetic construction kits, architectural modeling, and creating adjustable ball-and-socket joints in medium-scale figures. Their spherical geometry allows them to find their own poles instantly, ensuring a perfect connection every time.

Handling Advice: NOTICE: Spherical magnets roll easily. Because of their shape, they can travel quickly across surfaces and snap together from a distance. While N35 is less prone to impact shattering than higher grades, we recommend using a non-magnetic workspace to prevent loss and maintain the nickel plating.

Warnings and Safety Information:

CHOKING & INGESTION HAZARD: Extremely dangerous if swallowed. These are a major safety risk for children and pets.
Ingestion Warning: If two or more magnets are swallowed, they can attract through tissue, causing fatal internal damage. SEEK IMMEDIATE MEDICAL ATTENTION if ingestion is suspected.
Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants.
Electronics: Safe for modern devices at a distance, but avoid direct contact with hard drives or magnetic strips.

Applications:

Ball-and-socket joints for articulated figurines and action figure customization
Educational physics demonstrations and magnetic field visualization
Architectural structural prototypes and interactive 3D-modeling
Custom magnetic fasteners for lightweight apparel or wearable tech
DIY magnetic construction and jewelry hobbyist projects