FASTENERS / FIXINGS AND TOOLS

METRIC      DIN N/A      ISO N/A      BS N/A

SOCKET FLANGE BUTTONS ARE MEASURED FROM UNDER THE HEAD.

GRADE      10.9      HIGH TENSILE STEEL  BLACK PHOSPHORUS.

GRADE      10.9      HIGH TENSILE STEEL  ZINC PLATED.

GRADE      A2 = 304   STAINLESS STEEL.