self drilling screw

Diameter: From 3.5mm to 6.3mm,From #6 to #14
Length:From 9.50mm to 152mm Or From 3/8" to 6"
Material:C1022

self drilling screw Diameter: From 3.5mm to 6.3mm,From #6 to#14Length:From 9.50mm to 152mm Or From 3/8" to6"Material:C1022Coating: Zinc,Yellow Zinc,Black phosphated,Grayphosphated,Decromet Self-drilling screws mainly has threeadvantages as following:Firstly, Self-drilling screws can savelabor. Drilling hole, forming mating thread and clamping home canachieve in an easy operation. It doesnt require for difficultalignment of two or more elements.Secondly, self-drilling screwscan save materials. It only needs one tool for application---screwdrive. Power drills, drill bits and elaborate and costly presstools and their maintenance are eliminated.Finally, self-drillingscrews can improve product quality. It ensures correct hole sizeevery time, resulting in better thread engagement and tighter clampself drilling screw
self drilling screw