Hilitand Drilling Tail Screw Set, Countersunk Head Self Drilling, Tapping Metal Screws Bolts 50pcs M4.2 for Sheet Fixing(M4.2x25(50PCS))

ADVANTAGE:These self-drilling screws have sharp bore tails that do not require additional machining. HIGH QUALITY：These screws are made of high-hardness stainless steel and are suitable for steel processing and metal processing. SAVE TIME:They can drill, tap and lock materials at the same time, which is safe to operate and saves construction time. WIDELY APPLICATION: These self-drilling screws are mainly used for fixing steel steel tiles, or for simple construction of thin plates. HIGH STABILITY: These self-drilling screws are made of reliable materials, which ensures a high stability and reliable performance.