FASTENERS / FIXINGS AND TOOLS

METRIC      DIN 6797      ISO N/A      BS N/A

SHAKEPROOF WASHERS COME AS INTERNAL TOOTH OR EXTERNAL TOOTH.

GRADE      4                  MILD STEEL ZINC PLATED.

GRADE      A2 = 304      STAINLESS STEEL.

GRADE      A4 = 316      STAINLESS STEEL.