Self-tapping screws (SCREW) HEX HEAD

摘要

1. Self-tapping screw (screw), made of steel, consisting of a rod length of 10 to 40 mm with a sharpened tip and a hex head without flange situated at the other end of the rod having a sharpened tip starting from full threaded rod with an outer diameter of 3 to 6 mm, characterized by the presence in the center of the upper end of the screw hex head additional recess as a recess cruciform shape, hexagonal shape or form zvezdochki.2. Screws (screw) according to Claim. 1, characterized by the presence of a metal flat captive washer which is fixed to the screw rod directly behind hexagonal head of the screw and can rotate on the rod samoreza.3. Screws (screw), made of steel, consisting of a rod length of 10 to 40 mm with a sharpened tip and a hex head without flange situated at the other end of the rod having starting from the pointed tip of the rod full thread with an outer diameter of 3 to 6 mm, characterized by the presence in the center of the upper end of the screw hex head additional recess as a recess cruciform shape, hexagonal shape or asterisk shape and presence podgolovkom, as the cylinder is not more than 5 mm and a diameter greater than n Outer diameter of the screw thread, adjacent to the hex head samoreza.4. Screws (screw) according to Claim. 3, characterized by the presence of a metal flat captive washer which is fastened directly on the hexagonal head of the screw and podgolovkom can rotate podgolovkom samoreza.5. Screws (screw) according to claim. 4, wherein the captive washer mounted in an annular groove formed