For countersunk holes, it is a Ø 9.5 mm x 10 mm long screw, its head is 2 mm long with an M6 nut with a standard measurement of minimum 5.7 mm and maximum 5.95 mm and thickness of 6 mm where the screw part has a measurement of 8 mm. This piece has an eccentric nut and is designed to join shelves, cabinet rails, profiles, among others. The material with which it has been made is Zamak with natural Zamak finishes. The countersunk hole package contains 1,000 units.