A Thread Forming Tapping Screw with Spaced Threads and A Gimlet Point. A Countersunk Flat Head Is At Approximately An 82 Deg Angle. Phillips Is The Most Recommended Drive Type and Provides Good Control In Driving.Black oxide platedMaterial: steelSold in packs of 25Sheet metal screw or tapping screwFasteners used in metal, wood, plastic and fiberglass applicationsFully threaded for a strong secure holfGood for maintenance and repair as screws are removable and reusable