Flange Head Screws DIN6921– M10x20– 10.9 Zinc Black
This International Standard specifies the characteristics of flange
hexagon bolts ,with product grade A, with threads from M5 up to and
including M16,length from 10mm to 200mm,and property classes 8.8,
9.8, 10.9 and A2-70,A4-70.
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