S-99397A670 Length 4 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with Torx Plus IP15 drive, reducing cam-out and tool wear for reliable installation in high-volume production.
• Excellent corrosion resistance from zinc-plated steel construction, ensuring long-term durability in various industrial environments.
• Secure fastening in plastic materials through thread forming (TRS) design, creating strong, vibration-resistant threads without pre-tapping.
• Enhanced grip and reduced stress with Tri-Lobe shank cross-section, minimizing material cracking in plastic assemblies.
• Consistent 1.34mm pitch and full threading for uniform load distribution and reliable holding power in plastic applications.
• Broad compatibility with standard 1/8" drill bits, simplifying installation and reducing setup time.
• Compliance with RoHS 3 and REACH regulations, ensuring safe use in global industrial and consumer products.

Professional Applications & Engineering Value

These M3.63 zinc-plated steel TRS tapping screws are engineered to address common challenges in plastic fastening, such as material stress and thread stripping. The thread forming (TRS) design with a Tri-Lobe shank displaces plastic material to create durable, high-strength threads without chips, ideal for brittle or soft plastics. Combined with the Torx Plus IP15 drive, they enable higher torque application with minimal slippage, reducing assembly errors and improving production efficiency. The zinc-plated finish provides reliable corrosion protection, making these metric tapping screws suitable for automotive, electronics, and appliance industries where plastic assemblies require secure, long-lasting fastening solutions.

Specification Summary & Compliance

This M3.63 x 4mm tapping screw features a fully threaded design with an approximate 1.34mm pitch, Tri-Lobe shank, and blunt tip for precise thread forming in plastics. It adheres to standard metric dimensions and is compatible with a 1/8" drill bit for easy installation. The product is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and safe for industrial use globally.