Stainless Steel Phillips Modified Truss Head Self Drilling Screws
Modified Truss Head Self Tapping, TEK Point Screws with a Phillips Drive
Phillips Modified Truss Head Self Drilling Screws, also known as Lath Screws, feature a Phillips drive and a a sheet metal thread with a self driller cutting (TEK) point to pierce through 20 to 14 gauge metals. Modified Truss Head Screws feature an oversized domed head with a flange, similar to an integral washer. Modified Truss Head Screws have a 100 degree undercut which creates a larger area beneath the screw's head for a larger bearing surface.
Self Drilling Screws in this selection are made from hardened 410 Stainless Steel, to ensure that the metal of the screw is harder than the surface being drilled into. 410 Stainless Steel maintains the corrosion resistant properties of Stainless but is hardened up to approximately 40 Rockwell C. Harder than 18-8 stainless but with less corrosion resistance, 410 stainless is commonly used to make roofing screws, siding screws and self tapping (or self drilling) screws, because it is a harder material than the metal being fastened in these types of applications.