M8(8mmØ) FLANGED BUTTON HEAD SCREWS ALLEN KEY SOCKET BOLTS A2 STAINLESS STEEL
These are an ISO 7380-2. Further details are as follows M8 SOCKET FLANGE BUTTON HEAD SCREWS A2 STAINLESS STEEL. Thread Size - M8 (8mm). Dowel Pins & Lynch Pins. Head Depth including Flange - 4.4mm.