3.5 Inch Rubber Coated Rare Earth Magnet with M8 Thread – Heavy Duty Mounting Magnet

The 3.5 Inch Rubber Coated Rare Earth Magnet is a high-strength mounting solution engineered for demanding outdoor, automotive, marine, and industrial applications. Designed to deliver exceptional holding force while protecting painted, powder-coated, and metal surfaces, this magnet provides a secure, non-slip attachment point for custom brackets, antennas, Starlink mounts, lighting systems, tools, and more.

Its durable rubber coating prevents scratching and corrosion while increasing friction for improved grip, even in high-vibration environments. The integrated M8 threaded insert allows fast and reliable attachment to a wide range of hardware, making it extremely versatile for both temporary and semi-permanent installations.

⚠️ Important: Magnetic strength may vary depending on material thickness, steel quality, surface condition, and temperature. Ensure the surface is clean for maximum holding power.

Key Features

✅ High-Strength Rare Earth Magnet

Delivers powerful holding force suitable for heavy accessories, brackets, and mounting systems.

✅ Protective Rubber Coating

Prevents scratches, damage, and corrosion while enhancing friction for a more secure grip.

✅ Integrated M8 Threaded Insert

Provides a strong mechanical attachment point for bolts, brackets, and custom mounting hardware.

✅ Large 3.5 Inch Contact Surface

Maximises grip area for improved stability on steel surfaces.

✅ Ideal for Removable or Temporary Installations

Perfect for users who want to avoid permanent drilling or want a quick-deploy mounting point.

✅ Weather-Resistant & Durable

Built to withstand outdoor environments, making it suitable for vehicles, RVs, 4WDs, marine use, sheds, and workshops.

Installation Overview

1. Clean the mounting surface to remove dust, dirt, and metal shavings.

2. Position the magnet on the steel surface and ensure it sits flat for maximum grip.

3. Attach your bracket or accessory using an M8 bolt or fastener.

4. Tighten securely and check stability before use.

5. To remove, carefully lift the magnet from the edge—do not pry directly on the thread.

Important Notes

⚠️ Avoid using on extremely thin or low-grade steel, as holding power will be reduced.
⚠️ Not suitable for high-speed on-vehicle use unless tested and confirmed secure for your specific application.
⚠️ Keep magnets away from pacemakers, magnetic-sensitive equipment, and children.