20mm dia x 20mm thick with a 6mm hole through the centre.
The NORTH pole is on one curved side of the magnet and the SOUTH pole is on the opposite curved side. The poles are therefore semi-circular and are not on the flat circular ends where most magnets have them.

The NORTH and SOUTH poles are a maximum of 20mm apart.

The F4679 Diametrically magnetised magnets will engage each other from a distance of 100mm.

If you fix two non magnetic shafts at 100mm centres and attach a F4679 on both, if you turn one of them, the other one will turn too simply by the magnetic coupling that exists between them.

Plating

These magnets are plated with 3 layers of protective coatings - Nickel + Copper + Nickel (Ni-Cu-Ni)

Performance

These magnets will have approximately 4,100Gauss on each face.

Maximum Operating temperature

90 degrees C

Fixing

They can be fixed with a bolt through the 6mm dia hole or bonded using 2 part adhesives such as 'Araldite'