FandWay 60Pcs Self Tapping Screws for Steel,M5.5x38mm Self Drilling Screws for Metal,Flat Hex Socket Head Tek Screw,Sheet Metal Allen Key Screw 410 Stainless Steel Black Coating for Alu Wood Plastic

• 🔩【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.
• 🔩【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.
• 🔩【How to choose the size 】: Match screw length to material thickness: M5.5 screws for 1.75-5.25mm 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.
• 🔩【Technical Specifications】: Surface Hardness: HV450-600 (Vickers Hardness). Core Hardness: HRC 35-45 (Rockwell Hardness), balancing strength and toughness to avoid breakage risks.Torque: Torque & Clamping Force The best driven at 8-12N·m , yielding approximately 800–1,500 N of clamp force.
• 🔩【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 Flat Hex 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 M5.5x38mm (pack of 60) 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】 M5.5x38mm（#12 x 1-1/2 inch)------------60 Pieces Hex key ------------1Pieces - Total Quantity: 81-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！