S-90485A140 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Efficient thread forming with Tri-Lobe shank design and 28 TPI, creating strong, vibration-resistant threads in plastic materials.
• Optimized for plastic assemblies with blunt tip and thread forming technology to prevent material cracking and ensure secure fastening.
• Easy installation and flush finish with Phillips flat head design and 82° countersink angle for professional-looking results.
• Enhanced drive stability with Phillips No. 1 drive, reducing cam-out and improving assembly efficiency.
• Full compliance with environmental regulations including RoHS 3 and REACH, making them suitable for global industrial applications.
• Precision compatibility with No. 48 drill bits, ensuring accurate hole preparation and consistent performance.

Professional Applications & Engineering Value

These No. 2 x 1/2" TRS tapping screws are specifically engineered for plastic fastening applications, where traditional screws may cause splitting or weak holds. The 18-8 stainless steel material provides excellent corrosion resistance, ideal for outdoor or humid conditions. The Tri-Lobe shank cross-section and thread forming technology displace plastic material during installation, creating tight, durable threads without pre-tapping. This design minimizes stress concentration, reducing the risk of plastic cracking and ensuring reliable, long-term fastening in electronics enclosures, automotive components, and consumer products. The fully threaded and blunt tip features allow for smooth entry and maximum thread engagement, enhancing pull-out strength and vibration resistance in plastic assemblies.

Specification Summary & Compliance

These screws feature a No. 2 size with 1/2" length and 0.086" thread diameter, manufactured to inch system standards. The thread forming (TRS) type ensures precise fit with 28 TPI and standard thread tolerances. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming they are free from hazardous substances and suitable for regulated industries. Designed for use with No. 48 drill bits (0.076" diameter) and 82° countersink angles, they meet common industrial requirements for plastic fastening applications.