M3; i/d 3.2mm, o/d 7mm, 0.5mm thick.
M4; i/d 4.3mm, o/d 9mm, 0.8mm thick.
M5; i/d 5.3mm, o/d 10mm, 0.8mm thick.
M6; i/d 6.4mm, o/d 12mm, 0.8mm thick.
M8; i/d 8.4mm, o/d 16mm, 1.6mm thick.
M10; i/d 10.5mm, o/d 20mm, 1.6mm thick.
M12; i/d 13mm, o/d 24mm, 1.6mm thick.