S-90485A320 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in humid or chemical environments.
• Excellent holding power in plastic materials due to the tri-lobe shank design, which prevents loosening and provides secure, vibration-resistant fastening.
• Efficient installation with reduced driving torque from the thread forming (TRS) design, minimizing the risk of plastic cracking during assembly.
• Clean, flush finish with a standard flat head and 82° countersink angle, allowing for smooth surface integration in visible applications.
• Wide compatibility with a No. 8 size and 16 threads per inch, offering precise fit for various plastic assembly requirements.
• Enhanced durability and full thread engagement as fully threaded screws provide consistent grip along the entire length for robust connections.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industrial sectors.

Professional Applications & Engineering Value

These 18-8 stainless steel Phillips flat head tapping screws are engineered to address common challenges in plastic assembly, such as material stress and fastener failure. The TRS thread forming method and tri-lobe shank create strong, permanent threads in plastics without pre-tapping, reducing installation time and tool wear. This design minimizes the risk of plastic cracking by distributing stress evenly, making it ideal for applications in electronics, automotive components, and consumer goods where vibration resistance and corrosion protection are critical. The fully threaded configuration ensures maximum holding power, while the flat head with an 82° angle allows for a seamless finish, enhancing both performance and aesthetics in industrial settings.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a thread diameter of 0.164" and approximately 16 threads per inch, ensuring consistent fit. The thread forming design complies with typical industrial tolerances for plastic fastening. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments requiring strict environmental and safety compliance, without hazardous substances.