Fasteners in “HASTELLOY B2”: N° 20 Hexagon head screws, fully threaded M16x100; N° 14 Hexagon head screws, fully threaded M16x80; N° 24 Hexagon nuts M16; N° 48 Flat washers D.16; N° 10 Hexagon head screws, fully threaded M10x60; N° 10 Hexagon nuts M10; N° 2° Flat washers D.10.