FULLY OR PART THREADED DIN 6921. Hexagon head bolts DIN 6921 – M8 x 25–10.9–flZn. HEXAGON HEAD FLANGE NUTS SIZE M8 x 1.25. Hexagon head nuts DIN 6923 – M8–10–flZn. HEXAGON FLANGE NUTS DIN 6923. 10.9 GRADE HIGH TENSILE STEEL.
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