GPS Coordinates (Latitude/Longitude in decimal degrees):
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Another option in town for fasteners is Magasin Tavita, 40429971 which is north east of the Cathedral on the same street. They carry half fishing tackle and half fasteners.
Besides metric stainless bolts and screws they also carry imperial both UNC and UNF. There is some imperial stainless but for engines and transmissions there is both UNC and UNF steel.