E-Magnets Shallow pot magnets are low profile for applications where height is limited. They have a clearance hole through and a countersink on the magnetic face to accept a countersunk screw. Maximum operating temperature: 500°C.Material: AlnicoThe E-Magnets 827 Shallow Pot Magnet has the following specifications: Diameter: 29mm (1.1/8 inch). Height: 9mm (11/32 inch). Maximum Pull: 5kg (11 lb).