5/16"-18 Zinc plated thread cutting screws feature a thread cutting tip which makes threads in existing or pre-drilled holes.
Drill Bit Sizes for Thread Cutting Screws
- Feature a machine screw style thread
- Blunt tapered point with multi-cutting edges
- Hexagonal head with a slotted drive and washer built into the head
- Applied with a wrench of a slotted or flat screwdriver
- Chip cavities
Zinc Plating adds a layer of corrosion resistance to plain alloy steel but is not recommended for extreme environments.
Sizes Listed As:
Diameter - Thread Pitch x Length from Underside of Head