FandWay 100 Pcs Torx Self Tapping Screws for Metal,M4.2x19mm Round Head Self Drilling Screws,Torx Pan Head Tek Screw 410 Stainless Steel Black Coating Sheet Metal Screw With T20 Bits For Alu Steel.

• 🔩【Durable Material】: These screws are made from premium 410 stainless steel and Black Dacromet coatings.Passes salt spray tests, Super corrosion resistance offering 5-10x higher corrosion resistance than zinc plating、black oxide.It is very suitable for outdoor and wet conditions.(Tips: 410 Stainless Steel Is A New Type Of Magnetic-Absorbing Stainless Steel so they are also still magnetic.)
• 🔩【Structure & Function 】: Featuring a drill-shaped tip with cutting grooves or spiral flutes, drill point screws integrate drilling and tapping functions. The self-drilling design eliminates the need for pre-drilling holes, enabling direct penetration into materials like metal sheets, wood, and plastic for rapid installation.
• 🔩【STAR/TORX DRIVE】: Free 1 T20 Torx Bit ---Star/Torx drive screws with 6 contact points prevent stripping, save drive torque and further fasten screws into metal construction, eliminate loose or camout.
• 🔩【How to choose the size 】: Match screw length to material thickness: M4.2 screws for 1.75-3mm steel plates.Their self-drilling and self-tapping capabilities might be limited when dealing with extremely hard or overly dense materials. It is necessary to assess the material properties beforehand.
• 🔩【Wide range of applications】: 1- Construction: Fixing color steel plates, aluminum profiles, and light-gauge steel frames. 2 - Home Improvement: Assembling furniture, wooden frames, and plastic components. 3 - Industrial Manufacturing: Joining thin metal sheets in automotive/mechanical equipment and corrosion-resistant outdoor installations.

🔥 【FandWay 410 Stainless Steel Torx Pan/Round Head Self Drilling Screws 】Pro-Grade Corrosion Defense · Effortless Installation · Lifetime Durability🔥 Why Choose Us? 1 - ✅ Military-Grade Rustproof: 410 stainless steel + black Dacromet coating passes 240-hour salt spray tests— corrosion-free in humid/salty environments! 2 - ✅ Drill & Fasten in 1 Step: Self-tapping tip pierces steel instantly. Works on wood, metal, plastic—50% faster installation! 3 - ✅ Purchasing in one size M4.2x19mm (pack of 100) often reduces the per-unit cost compared to buying Various sizes. This is economical for both frequent users and those stocking up for future needs. 4 - ✅ Ultra-Hard Surface: HV450+ hardness resists scratches, maintains thread integrity, and delivers 800MPa tensile strength! 5 - ✅ Smart Storage: Transparent PP case with magnetic bit slot—keep tools organized on jobsites or workshops! Perfect For: 🏗️ Roofing panels | 🛠️ Furniture assembly | 🚗 Auto body repair | 🏡 Outdoor fencing 【Package Included】 M4.2x19mm（#8 x 3/4 inch)------------100 Pieces T20 Torx bits------------1 Pieces - Total Quantity: 101-Pieces/set. - Whenever you need us, please contact us by email or Q&A, we will give you a Professional Service and reply you within 24 hours. - ⚠️⚠️⚠️Attention: Products contain small parts, keep away from children to prevent mistaken swallow ! - ⚠️⚠️⚠️There are uncertain risks when using screws. Please take protective measures to avoid accidents during operation！