120 PCS Stainless Steel Self Drilling Screws,Self Tapping Screws for Metal (120 PCS, Flat Head M3.5 & M4.2)

【HIGH QUALITY】: The self drilling screws are made of 410 stainless steels, with excellent anti-rust and anti-corrosion ability, which are strong and durable. 【VALUE PACK】: There are 120 pieces of flat head self drilling screws in one kit, including M3.5*13(20PCS), M3.5*19(20PCS), M3.5*25(20PCS),M4.2*13(20PCS), M4.2*19(20PCS), M4.2*25(20PCS). Different types and sizes can meet your different needs. 【DELICATE DESIGN】:The self tapping screw for metal adapts self-tapping, self-drilling Phillips design. The flat head and the fastened plane are on the same level, which is also conducive to the appearance of the product. The cutter head on the drilling tail is sharp, which can easily drill into iron sheet and other steel structural plates. 【HIGH EFFICIENCY】: The flat-head self drilling screw can directly drill, tap and lock on the building material, which could complete the whole operation at one time. Therefore, it greatly saves the working time and improves the engineering efficiency. 【WIDELY USE】: The self drilling and self tapping screws are widely used in the fixation of colored tile steel, sheet iron, plastic steel, aluminum alloy and industrial plastic of steel structure, and also adopt in the production and maintenance of containers and steel windows.