FandWay 100 Pcs Torx Self Tapping Screws Metal,M4.2x13mm Torx Countersunk Self Drilling Screws,Flat Head Sheet Metal Tek Screw 410 Stainless Steel With 1 T20 Bits For Aluminum Metalwork Roofing.

• 🔩【Durable Material】: Our self drilling screws made of premium 410 stainless steel, it has higher hardness, better corrosion resistance and rust prevention, and can easily penetrate metal plates. (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 -- 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 M4.2x13mm (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】 M4.2x13mm（#8 x 1/2 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！