M2.5 = o/d 6mm, I/d 2.7mm, thickness 0.5mm. M6 = o/d 12.0mm, I/d 6.4mm, thickness - 1.6mm. M3 = o/d 7mm, I/d 3.2mm, thickness 0.5mm. M4 = o/d 9mm, I/d 4.3mm, thickness 0.8mm. M5 = o/d 10mm, I/d 5.3mm, thickness - 1.0mm.
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