Standard DIN 603

Size
M5x16M5x20M5x25M5x30M6x16M6x20M6x25
M6x30M8x16M8x20M8x25M8x30M8x35M8x40
M10x20M10x25M10x30M10x35M10x40M12x25M12x30
M12x35M12x40M12x45M12x50M16x40M16x50M16x60
M20x70      

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