5mm M5 A2 STAINLESS STEEL COACH BOLTS CUP SQUARE CARRIAGE BOLT SCREWS - DIN 603
M5 CARRIAGE BOLTS - A2 STAINLESS. These are a DIN 603. Further details are as follows BA Screws, Nuts. BSW Screws, Nuts. UNC Screws, Nuts. Thread Pitch - 0.8mm. Square Section (Under Head) Depth - 4.1mm.