10.9 Grade High-Strength M12-1.25 Hex Flange Fine-Thread Screws, 9 Lengths (25/30/40/50/60/70/80/90/100mm) - 4 Pcs, Color-Zinc Plated, Suitable for Hardware & Car Modification (M12-1.25 * 100mm)

Whether you’re tackling a car modification project or handling daily hardware fastening tasks, a reliable, versatile screw is a must-have—and our M12-1.25 hex flange fine-thread screws check all the boxes. Engineered to excel in both hardware applications (like fixing metal brackets, machinery parts, or DIY furniture) and car modification (securing engine components, chassis parts, or body kits), these screws combine 10.9-grade strength, long-lasting rust protection, and a user-friendly design. The hex flange design is a game-changer for both hardware and auto use: the integrated flange acts as a built-in washer, evenly distributing pressure across surfaces to prevent damage—whether you’re fastening delicate car body panels or hardwearing metal hardware. It also eliminates the need for separate washers, cutting down on installation time and reducing the hassle of missing small parts. The hex head provides a secure grip with standard wrenches or sockets, even in tight spaces—perfect for under-car chassis work or cramped hardware cabinets. Strength is non-negotiable, and these screws deliver. Crafted from 10.9-grade high-strength alloy steel, they boast a tensile strength of 1000MPa and a yield strength of 900MPa—far stronger than ordinary screws. This means they can handle the rigors of both automotive and hardware use: resisting constant vibration (which loosens weaker fasteners in cars or machinery), sudden impacts (from road debris or hardware handling), and extreme temperature shifts (from engine heat to outdoor weather). Whether you’re securing a car’s suspension arm or a heavy-duty hardware bracket, you’ll avoid the risk of loose or failing parts, ensuring long-term reliability. Rust and corrosion are major concerns for any fastener, especially those exposed to moisture, oil, or outdoor elements. That’s why every screw features a professional color-zinc plating. The coating is thick, uniform, and dense, exceeding industry standards to resist moisture, salt spray (ideal for coastal car owners), engine oil, and hardware-related chemicals. This protection keeps screws rust-free for years, maintaining their structural integrity and appearance—no more dealing with seized, corroded fasteners when servicing your car or adjusting hardware. We’ve tailored these screws to fit diverse needs: the M12-1.25 fine thread ensures precise engagement with compatible nuts and tapped holes, minimizing cross-threading or stripping (critical for both delicate auto parts and hardware).Every screw undergoes strict quality testing: thread precision checks for smooth installation, hardness tests to confirm strength, and surface inspections to eliminate burrs or defects. Packaged in moisture-proof, labeled bags, they’re easy to store and grab—whether you’re in a garage or a workshop. For hardware and car modification that’s strong, durable, and convenient, these screws are the perfect fit.

• Dual Use for Hardware & Car Mod: Designed to excel in both hardware tasks (metal brackets, machinery) and car modification (engine parts, chassis), offering versatile fastening solutions for diverse needs.
• 10.9-Grade Strength & Hex Flange: 1000MPa tensile/900MPa yield strength resists vibration/impacts; integrated flange acts as a built-in washer (prevents damage, no extra washers needed) for easy, secure installation.
• Color-Zinc Rust Protection: Thick, uniform plating shields against moisture, salt spray, oil, and chemicals, ensuring long-term rust resistance and reducing maintenance/replacement costs.
• Precise Quality : Each screw passes precision/hardness tests (no burrs/defects)
• 4 pieces per package，M12-1.25*100mm