8mm x 3mm (5/16" x 1/8") Neodymium Disc Magnet – N52 Grade | Precision Pillar Power Disc

Key Features:

• Dimensions: 8mm Diameter × 3mm Thickness (7.94mm × 3.18mm)
• Precision Tolerance: ±0.05mm 
• Magnet Grade: N52 
• Pull Force: Approx. 4.2 lbs
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
• Magnetization: Axially magnetized (Poles on the flat circular faces)
• Shape: High-Volume Compact Pillar

Material Description:

Our 8mm x 3mm N52 discs are designed for professional engineering applications that require a robust magnetic bond within a concentrated area. The 3mm thickness ensures high magnetic volume, allowing the flux to project deeper through non-magnetic barriers like heavy acrylic housings, structural plastics, or hardwood veneers. These are the premier choice for "invisible" heavy-duty latches in custom cabinetry, magnetic couplers in small-scale robotics, and securing removable components in high-vibration environments.

Handling Advice: DANGER: These compact pillars possess a high snap velocity. With over 4 lbs of pull force, they can jump toward each other or steel tools from several inches away. High-impact collisions can shatter the brittle neodymium core and cause painful skin pinches. Always handle one at a time and separate by sliding horizontally off the stack.

Warnings and Safety Information:

• Pinch Hazard: Strong enough to cause painful skin pinches or blood blisters. Handle with care.
• CHOKING HAZARD: Small size poses a severe danger to children and pets. Keep strictly secured.
• Ingestion Warning: Swallowed magnets can attract through tissue walls, causing fatal complications. SEEK IMMEDIATE MEDICAL ATTENTION if swallowed.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.

Applications:

• Heavy-duty concealed latches for secret doors, panels, and premium custom cabinetry
• Flush-mounted removable panels and high-strength access doors for 3D-printed enclosures
• High-torque magnetic couplers and mechanical components for precision robotics
• Deep-reach sensor triggers for industrial proximity switches and Hall-effect sensors
• Magnetizing complex weapon systems and large display bases for tabletop gaming miniatures