38mm x 6mm x Hole 5mm Neodymium Countersunk Magnet – N52 Grade | Industrial Heavyweight Fastener

Key Features:

• Dimensions: 38mm Outer Diameter × 6mm Thickness × 5mm Inner Hole Diameter
• Countersink Profile: Accommodates standard #6, #8, or M5 flathead wood/machine screws for flush mounting
• Precision Tolerance: ±0.05mm
• Magnet Grade: N52
• Pull Force: Approx. 43.3 lbs 
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating
• Magnetization: Axially magnetized (Poles on the flat circular faces, countersunk on the North face)

Material Description:

Our 38mm x 6mm countersunk N52 ring magnets provide an exceptionally strong, mechanically anchored fastening solution for the most demanding commercial, architectural, and industrial environments. The substantial 6mm thickness creates a deep, intense magnetic field capable of penetrating through heavy finishes or non-magnetic air gaps. Featuring an integrated 5mm countersunk hole, it accommodates heavier-duty M5 or flathead screws. Because the flathead screw head drops perfectly flush within the recessed pocket, it permits uninterrupted metal-to-magnet surface contact, maximizing the available 64.5 lbs of holding force.

Handling Advice: EXTREME DANGER: Large industrial countersunk magnets require strict, controlled handling. With nearly 65 lbs of pull force, two magnets will attract with severe, finger-crushing velocity from several inches away. Impact can lead to crushed or broken bones and will cause the brittle magnets to shatter into sharp fragments. Over-tightening installation screws with power tools can also cause the magnet to split at its recessed center—always hand-tighten with care.

Warnings and Safety Information:

• Severe Crush Hazard: High risk of serious skin and finger pinching or crushed bones. For professional use only.
• Fragility Hazard: Do not over-tighten screws. Extreme impact force from snapping together WILL shatter the ring wall.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.
• Electronics: Keep well away from hard drives, credit cards, and all sensitive electronic equipment.

Applications:

• Heavy-duty hidden closures for heavy security doors, hidden rooms, and custom cabinetry
• Mechanical anchoring for large removable wall partitions, acoustic panels, and massive structural graphics
• High-vibration shop-tool organization, heavy equipment mounting, and custom workbench hold-downs
• Secure, screw-in fasteners for industrial modular retail displays, heavy signage, and exhibition frames
• Heavy-duty 3D-printed equipment enclosures and removable machine guarding plates