Arnold Umformtechnik, a manufacturer of intelligent joining solutions and a development partner for the automotive and electrical industries, developed Flowform® screws in response to the increasingly complex requirements for sheet metal joining. These trilobal (triangular) screws utilise the technology of flow-hole forming in the fabrication process. Flowform is a cost optimised solution that offers higher process reliability for threaded fastener joints and considerable advantages over alternative sheet metal joining methods: ease of loosening, accessibility, positioning, reassembly with threaded fasteners, freedom from fabrication residues.