Self Tapping Screws
low price high durable M3-M8 304 316 stainless steel corrosion rust anti plastic use countersunk phillips head self tapping screw
Self-tapping screws are efficient, all-purpose fasteners for furniture, construction, electronics and automotive applications. Unlike ordinary screws, they need no pre-drilled threads or nuts, completing drilling, threading and locking in one step to save installation time and labor costs.
Featuring sharp tips and precision triangular threads, our screws can cut firm threads on wood, plastic, iron and aluminum sheets. They grip tightly and resist loosening from vibration, ensuring stable long-term fastening performance.
We offer two practical material options for different scenarios:
Carbon Steel Screws
Hardened for high torsion resistance, effectively preventing slipping and breakage. Multiple finishes like white zinc, color zinc and nickel plating provide good anti-rust protection. Cost-effective and perfect for indoor dry environments, including furniture and electrical assembly.
304 Stainless Steel Screws
Boasting excellent rust and corrosion resistance, these screws withstand humidity, rain, outdoor exposure and salt fog. Ideal for outdoor projects, kitchen and bathroom equipment and other harsh working environments.
Available in various head types: pan head, countersunk head, hexagonal head and flange head, fitting different flat and hidden installation needs. Standard cross grooves suit common screwdrivers for easy operation. Sharp pointed tips fit soft materials, while drill tail tips work perfectly for 0.5-2mm thin metal sheets.
Full ST specifications (ST2.2-ST6.3) and 4mm-80mm lengths are in stock. Custom sizes and threads are supported. Factory direct supply with stable quality, fast delivery and support for small trial orders, suitable for global wholesale and engineering procurement.