Nelson Fastener Systems Double Reduced Base Ferrules

These ferrules have an internal cavity, and are used to weld studs that have a base diameter that is significantly smaller than the outer diameter of the stud. This combination of stud and ferrule results in a weld flash diameter that is smaller than the stud diameter. Double reduced weld base studs may be sued in applications where the base material thickness is too thin for welding the full stud diameter without burning through the base material. The ferrules may also be used with short studs that serve as locator, or “dowel pin,” studs, where having a small weld fillet is of more importance than the weld strength