magnetic mounting pads in a variety of different sizes, threaded stud and through hole types Rubber coating on a threaded stud magnetic mounting pad Types of magnetic mounting pad - Threaded stud and through hole magnetic mounting pads

Group of magnetic mounting pads in a variety of different sizes, threaded stud and through hole types
A magnetic mounting pad is a magnet that holds objects made of non-ferromagnetic materials, such as plastic car roof signs, to a ferromagnetic material like a car roof.

Through hole magnetic mounting pad
Through hole magnetic mounting pad 
Magnetic mounting pads are particularly useful for these tasks due to the amount of shear strength they have.

Shear strength refers to the magnet’s ability to resist any forces trying to make the magnet slip from the ferromagnetic surface.

Rubber coating on a threaded stud magnetic mounting pad
Rubber coating on a threaded stud magnetic mounting pad
Magnetic mounting pads have a high shear strength due to their rubber coating

Yellow taxi with a sign with advertisements, with labelled magnetic mounting pads holding it on
Yellow taxi with a sign with advertisements, with labelled magnetic mounting pads holding it on
Magnetic mounting pads are predominantly used for advertising, as the adverts can be easily changed.

This is because they can securely hold the sign for an extended period of time, but because of the magnetic capabilities, it can be easily removed by the user when they need to.

This is also known as a taxi magnet due to its role of holding taxi signs on the roof of a taxi

Types of magnetic mounting pad - Threaded stud and through hole magnetic mounting pads

Types of magnetic mounting pad: Threaded stud and through hole magnetic mounting pads
They come in two forms; through hole and threaded stud.

For more information see, What are the different types of magnetic mounting pad?