A high strength breakstem fastener, which makes it ideal for the use in thin sheet materials. Fasteners feature a wide grip range, especially suited for applications with varying sheet thicknesses. They also have the advantage of good hole fill compensating for irregular, oversized or misalignes .   1.Multi-grip capability.   2.High residual clamp load.   3.Resists vibration.   4.High shear and tensile strength.   5.Suitable also in softer materials.