Round RFID (25mm) Case

Cover,
Height: 4mm
Diameter: 26.40mm
Inner Diameter: 24.44
Screw Hole Diameter: 2mm

Lower Component,
Height: 7mm
Diameter: 29.25mm
Inner Diameter: 26.40mm
Bottom Layer Height: 3mm

The screw hole is off center to allow the RFID coil + components to exist relatively unharmed. The opening for an M2 screw is pretty tight, and the "table" the cover rests on inside of the lower component is pretty weak. Measuring 1mm, mine broke off immediately. Will probably need to make that wall thicker/more resilient without compromising the space available for the RFID tag. The screw opening is pretty tight, and the bottom is indented 5mm around the the bottom opening to allow for a nut to fit flush with the surface.