1. Larger head provides a larger bearing surface area for attaching metal lath 2. Low profile head meets installation requirements for attaching metal lath to wood or steel 3. Available with Type 17 or #3 self-drilling point 4. Type 17 points for fast starts and minimized splitting 5.# 3 self-drilling point penetrates steel up to .142″ thick 6. Phillips drive deep and cleanly formed, reducing spin-outs 7. Certified 410 features a protective coating for maximum corrosion resistancePhillips Modified Truss Head Sheet Metal Screws (also known as Lath Screws) features a Phillips drive and a notched type 17 point at the tip to aid in chip removal during thread cutting. 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. Modified Truss Head Sheet Metal Screws are commonly used in applications fastening to wood. Modified Truss Head Sheet Metal Screws feature a sharp point and cutting threads that provide excellent retention in wood, composites, plastics, and soft metals. They are made of grade 304 Stainless Steel, which is corrosion and rust-resistant.