Press Release: Powertite

Powertite, with its perfect geometric fit, increases load-bearing capacity in the tapped nut thread by over 20 percent compared to screws with trilobular load-bearing cross-section. That creates a series of technical and commercial benefits: standards-compliant tapping torques, plastically stressed assembly even into conical cast core holes in Al-Gd, a preload force similar to metric fastenings, and the possibility of larger core hole tolerances to optimise lightweight metals casting.
Source article: https://mfgaxis.com/press-releases/powertite/
Company: Arnold Fastening Systems Inc.