columns:id|TEXT	min_board_thickness|NUMERIC	drilling_diameter|NUMERIC	drilling2|NUMERIC	drilling_distance|NUMERIC	ignore_group_csd|TEXT	drilling_depth1|NUMERIC	drilling_depth2|NUMERIC	series_bolt|TEXT	caps_series|TEXT	bead|NUMERIC	bolthead_diameter|NUMERIC	surface_distance|NUMERIC	allowed_for_backs|NUMERIC	former_id|TEXT	symbol_name|TEXT
indexes:id|UNIQUE
