DIN 6330B High Hex Nut 10, Steel Zinc-Plated

Material steel. Uncoated (St).
Nut with one flat end and one tapered end. The nut can be used either way; when the tapered side faces the clamped surface, a matching tapered washer DIN 6319D must be used.
Product deviating from the standard, e.g. across flats, coating and material strength, thread pitch. NOTE! Zinc plating or passivation of these products may cause hydrogen embrittlement.

Nut used in demanding structures where strength is required.
Can be used in either direction, increasing its range of applications.