Pot magnet with good clamping force and a centrally tapped screw hole make it perfect for a variety of projects.
21-15474 - Pot Magnet 12.7mm with M4 Thread
21-15476 - Pot Magnet 17.5mm with M6 Thread
21-15480 - Pot Magnet 27mm with M6 Thread
21-15482 - Pot Magnet 35mm with M6 Thread
They always have good communication and the products I order show up in time.