Wieländer + Schill K3 + K4 Punching & Reshaping Die | 700349

The K3 + K4 set is a precision punching and reshaping die designed for use as a preparatory process when installing flow-form rivets (FFR) with an 8.0 mm diameter. It consists of two parts: K3 (punch Ø 8 mm) and K4 (reshape head Ø 8 mm). This tool ensures correct hole geometry punching, reshaping, and calibration so that the subsequent flow-form rivet installation meets OEM and structural integrity requirements.