FASTENERS / FIXINGS AND TOOLS

METRIC      DIN 6921      ISO N/A      BS 4162

HEXAGON FLANGE BOLT ARE ALWAYS MEASURED FROM UNDER THE HEAD.

GRADE     8.8             STD HIGH TENSILE STEEL ZINC PLATED.

GRADE     10.9           HIGH TENSILE STEEL OXIDE BLACK.

GRADE     A2 = 304   STAINLESS STEEL.