SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets.
SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets.
SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets.
Roll over image to zoom in Click on image to zoom
SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets. SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets. SuperMagnetMan Neodymium Disc Magnet. Used as medical magnets, holding magnets, sensor magnets, consumer electronics magnets. These small magnets are strong rare earth neodymium magnets also used as automotive magnets.

D1021A - Disc Magnet - 4mm dia x 0.50mm th - N50 - Nickel Plated

Diameter 0.157" (4mm)
Thickness 0.020" (0.50mm)
Grade Neodymium 50
Max Working Temp 60°C
Coating Nickel
Direction of Magnetism Through thickness
MOQ 50
Price:
$0.30
Stock:
In stock (1529 units), ready to be shipped

Additional Resources

Pull Force Calculator

Estimate holding power for your application.

Go to Calculator
Coating Specifications

Compare different coatings for corrosion resistance, and durability to choose the right option for your specific application.

View Coatings Now
Material Grades & Curves

Explore Neodymium & Samarium Cobalt magnet material specs and BH curves to ensure proper material selection for your specific application.

View Materials Now
Custom Solutions

SuperMagnetMan is the e-commerce brand of SM Magnetics, here to make it easy to get the magnets you need for prototyping, testing, or small-scale use. When you're ready for a custom solution—whether that’s a fully engineered magnetic system, simulation support, or a complete assembly—our team at SM Magnetics is ready to help you bring it to life.

About the Product

Neodymium disc magnets are a compact, high-energy format used for sensor prototypes, closures, and robotic fixtures. The round footprint seats cleanly in counterbores and adhesive pockets, with consistent thickness tolerance for reliable stack-ups. Standard axial magnetization provides predictable pull to steel. During test-fit, use the Pull Force Calculator to estimate holding force and select coatings appropriate to the environment; consult material data when evaluating grade and thermal behavior.

Customer Reviews

Based on 7 reviews
100%
(7)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
O
Orlando Rosell

D1021A

D
Dale Buxton
The perfect magnet for my purpose

I use these magnets at part of remote HO scale train uncoupler. This disc magnet approximates a target head of a switch stand. The magnet disc is connected to a bell-crank which is connected to a SG90 servo motor. When activated the magnet disc rotates up over the couplers on the model train cars and they uncouple. I developed this method for remotely uncoupling trains that were out of my reach. It works pretty good too. Though it does require perfect alignment of the train cars with the magnet target.

G
Guannan Li

D1021A

J
Joe Berman
Good and quick

What I ordered correct and fast

A
Austin Summers

D1021A

12

You may also like