Pilot End Having Means Enhancing Fastening Or Installation Patents (Class 411/386)
- Having a reaming portion (Class 411/387.2)
- Having enhanced gripping structure (Class 411/387.3)
- Thread-tapping portion or with thread pitch stabilizing ridge (Class 411/387.4)
- Having distinct, spaced cutting edges or points (e.g., prongs) (Class 411/387.5)
- Resembling a twist-drill-type bit (Class 411/387.6)