M20
Nut
with M20 x 2.5 standard slope and 18 mm total height, high tensile grade: 10 - spanner size: 30 mm
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Product number: 518249
Slotted nut
with M20 x 2.5 standard slope and 16 mm total height - spanner size: 30 mm
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Product number: 355357
Nyloc nut
with M20 x 2.5 standard slope and 22 mm total height - spanner size: 30 mm
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Product number: 361280