FULLY OR PART THREADED DIN 6921. Hexagon head bolts DIN 6921 – M12 x 50–10.9–flZn. HEXAGON HEAD FLANGE NUTS SIZE M12 x 1.75. Hexagon head nuts DIN 6923 – M12–10–flZn. HEXAGON FLANGE NUTS DIN 6923. with non-electrolytically applied zinc flake coating.
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