Flat ISO 4026

Size
M3x5M3x6M3x8M4x4M4x5M4x6M4x8
M4x12M4x16M4x20M5x5M5x6M5x8M5x10
M5x16M5x20M6x6M6x8M6x10M6x12M6x16
M6x25M6x30M8x6M8x8M8x10M8x12M8x14
M8x20M8x25M8x30M8x35M8x40M10x10M10x12
M10x20M10x25M10x30M10x40M12x12M12x16