K-Lath Self-Drilling Framing Bullets^® our wafer head Framing Bullet^® has a head design called a modified round washer head. This head style is similar to what is known as a K-lath screw and is used for attaching wire lath to wood or metal studs. These screws feature a self-drilling point that cuts through heavy duty metal studs with ease. Specially designed points decrease driving torque while offering optimum holding power. This “one Step” fastener drills and taps its own hole in most metals up to 0.125” thickness. We recommend a 1500 RPM setting to install these screws properly. Available in a clear zinc plating and a Phillips drive, this is the fastener of choice for the metal fabricator.