Thread Cutting screws feature a thread cutting tip which makes threads in existing or pre-drilled holes. They provide a tight fit and high resistances to torque, shear, and tension when applied. Type F thread cutting screws feature a machine screw style thread and blunt tapered point with multi-cutting edges and chip cavities.
Slotted Indented Hex Washer Head , or slotted hex washer head, or indented hex washer head, screws feature a hexagonal head with a slotted drive and washer built into the head. They can be applied with a wrench of a slotted or flat screwdriver.
Sizes Listed As:Diameter - Thread Pitch x Length from Underside of Head