Staircases should not only blend into a room visually and aesthetically – they also have to be functional and resilient. Especially when it comes to ensuring the long lifetime of a staircase structure. Today, wooden staircases in particular are no longer just interfaces between two levels, but independent design elements. SPAX has the fasteners so essential to achieving this: for timber construction, SPAX with WIROX coating, washer head and partial thread. Or the universal SPAX screw with cross recess and countersunk head – also with bronze finishing for colour coordinating. Alternatively with the T-STAR plus recess – likewise with partial or full thread. As a result, there are no limits to the design and structural possibilities available.