Hefei Super Electronics Co., Ltd.
What Are You Looking For?
Strong round countersunk neodymium magnet with a central hole for easy mounting and secure metal holding, perfect for mounting, organizing metal objects in DIY, and industrial use.
Size :
1.65 inch x 0.16 inchColor :
SilveryOrder(MOQ) :
100pcsSample :
AvailableLead Time :
10-15 daysPayment :
Paypal/TT/Credit CardSuper Powerful Permanent Countersunk Magnet With Screw Hole
Product Description

Diameter: 1.65'' / 42mm
Thickness: 0.16'' / 4mm
Screw Size : #4
Tolerances: ±0.05mm
Material: NdFeB
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Notes:
1. All magnets are brittle and will break if they are allowed to collide with a magnetic surface or each other.
2. Shards produced from broken magnets are very sharp and can be ejected from collisions. Wear eye protection and gloves when handling larger or exceptionally powerful magnets.
3. Keep them away from pacemakers and children.
Product Features
Superior Magnetic Performance:
This large countersunk disc magnet is made of premium neodymium iron boron (NdFeB) material, offering exceptional magnetic strength and stability. Its powerful attraction ensures reliable operation even in harsh environments, making it ideal for precision assembly or heavy duty applications.
Precision Countersunk Construction:
This round powerful mounting magnet features an M4 countersunk hole design for secure screw mounting and precise fit to both metal and non-metal surfaces. Smooth edges and uniform countersunk depth ensure easy installation and a clean, professional look.
Durable Nickel Coating and Premium Finish:
The silver countersunk NdFeB magnets feature a three-layer nickel-copper-nickel plating coating, providing excellent corrosion resistance, superior durability, and a bright metallic luster. This advanced surface treatment process not only extends service life but also effectively prevents moisture and wear, ensuring long-term stable performance.
How To Use

How to Properly Separate Magnets
Follow these safe steps to separate your magnets easily and safely:
1️⃣ Slide one magnet from the top of the stack to the side — never pull it straight off.
2️⃣ Lift and tilt the magnet gently away from the others.

Usages:
1️⃣ On Metal Surfaces:
Attach the countersunk magnet directly to metal surfaces — no screws needed.It can hold or hang objects firmly with strong magnetic force.
2️⃣ On Non-Metal Surfaces:
Use a screw through the countersunk hole to fix the magnet onto wood, plastic, or wall surfaces.Make sure to use a stainless steel screw to avoid magnetic interference.
Applications:
1️⃣ Home Use – Ideal for hanging decorations or keys.
2️⃣ Kitchen Helper – Perfect for holding knives, utensils, or spice jars.
3️⃣ Office Hanger – Great for organizing tools, whiteboard accessories, or cables.
4️⃣ Tool Wall DIY – Build your own magnetic tool rack or garage storage system.
Packing&Shipping

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