On account of them being offset, this does have to have its screwdriver considering that Phillips and slotted screwdrivers won't in shape. This is usually used in armed service applications, and anyplace torque is needed.You will find a triple square travel that have three robertson’s squares which form 12-place star. Triple squares are normally
lead screw thread type - An Overview
Chucks are specialised clamps produced to carry objects getting radial symmetry for example cylinders. They normally have jaws to secure the workpiece. The jaws (or canine) are organised in the star-like configuration with radial symmetry.As we transfer in the direction of the best on the screw, it thins somewhat, the diameter of your screw current