4mm x 2mm (5/32" x 5/64") Neodymium Disc Magnet – N55 Grade 

Key Features:

• Dimensions: 4mm Diameter × 2mm Thickness (Approx. 5/32" × 5/64")
• Micro Profile: Tiny microscopic footprint engineered to fit inside hyper-restricted spacing envelopes
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N55 – The highest commercial energy density available for maximum magnetic power output
• Pull Force: Approx. 0.9 lb
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating for a sleek, protective finish
• Magnetization: Axially magnetized (Poles on the flat circular faces)

Material Description:

Our 4mm x 2mm N55 disc magnets represent the absolute pinnacle of miniature rare-earth engineering. Designed specifically for micro-fabrication, advanced robotics, and high-end crafting where traditional bonding space is nonexistent, the premium N55 composition ensures that this micro cylinder vastly outperforms standard N35 or N42 alternatives. The balanced 2mm thickness provides excellent magnetic depth, allowing the flux field to project cleanly through thin non-magnetic plastics, resins, or wood. These discs can be press-fitted or epoxied into tiny drilled channels to create near-invisible hidden alignment points or low-clearance latches.

Handling Advice: CRITICAL NOTICE: Elite N55 micro magnets require microscopic handling care. Sintered neodymium is inherently brittle like glass. Because these magnets are incredibly small and possess a very high snap velocity relative to their tiny mass, letting them leap together freely or snap onto steel tools will instantly chip or shatter them. Always separate individual pieces by carefully sliding them sideways off the stack using your fingernail or non-magnetic tweezers, rather than pulling them apart vertically.

Warnings and Safety Information:

• Fragility Hazard: Microscopic profile. High velocity from snapping together WILL crack or chip the cylinder walls.
• CHOKING HAZARD: Micro-sized profile poses an extreme and severe danger to children and pets. Keep strictly secured.
• Ingestion Warning: Swallowed magnets can attract through internal tissue walls, causing fatal complications. SEEK IMMEDIATE MEDICAL ATTENTION if ingested.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.

Applications:

• Micro hidden catches for high-end boutique luxury packaging, small jewelry mechanisms, and delicate cosmetic jars
• Advanced mechanical anchoring and swappable limbs/weapon variants for high-detail tabletop gaming miniatures
• Precision magnetic indexing, tiny reed switch activations, and micro Hall-effect arrays in robotics and automated tech
• Concealed alignment tabs and flush-mount panels for miniature 3D-printed enclosures and smart wearable tech components
• High-accuracy sensory triggers for micro-latches, drone optical hardware linkages, and instrumentation calibration