1/4-14X3 1/2 Phillips Modified Truss head Self Drilling Screw Full Thread Zinc (Pack Qty 600) BC-1456KPM

Common usage is to attach wire or metal lathe to metal studs of a thickness between 12 - 20 gauge. The head design offers low clearance and an extra large bearing surface. The recommended drive speed for installation is 2500 rpm. AISI 1016 - 1022 or equivalent steel Offers superior corrosion resistance, but can only be used in softer materials. Hardness of the material to be drilled should be a minimum of 10-20 Rockwell hardness points less than the fastener. 18-8 stainless Not as corrosion-resistant as the 18-8 variety but will drill through harder materials than the 18-8 screw. The same hardness gradient rule applies: material drilled should be a minimum of 10-20 Rockwell hardness points less than the fastener. 410 stainle