Weighted Table Hexagon Screw Half Rib DIN931

The use of semi-thread screws is in the cases where the parts are attached to not-threaded part, especially if the connection is under dynamic load. However, it should be noted that due to the lack of uniform dispersion of tension during the screw in the final part of the thread, we will have tension concentration. To choose semi-rib hexagon screws and all gears, the detailed engineering calculations is required.