S-99397A223 Length 5 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic with the TRS thread forming design that creates strong, permanent threads without pre-drilling in many applications.
• High-torque drive performance from the Torx Plus IP6 drive, reducing cam-out and tool wear for efficient assembly and longer tool life.
• Excellent corrosion resistance provided by the zinc-plated steel construction, ensuring long-term reliability in various industrial environments.
• Optimized for plastic fastening featuring a blunt tip and Tri-Lobe shank cross-section that displaces material to form secure, high-strip resistance threads.
• Full-length threading for maximum grip and consistent clamping force along the entire 5mm length of the screw.
• Streamlined assembly process with a standard pan head design that sits flush and the recommended No. 51 drill bit size for precise installation.
• Compliance with global environmental standards, being RoHS 3 and REACH compliant for safe and responsible use in regulated industries.

Professional Applications & Engineering Value

This M1.91 x 5mm TRS tapping screw is engineered to address common fastening challenges in plastic assemblies. The zinc-plated steel material offers a robust balance of strength and corrosion resistance, while the thread forming (TRS) design with its Tri-Lobe shank and blunt tip eliminates the need for tapped holes. This creates strong, load-bearing threads in the parent material, significantly reducing the risk of stress cracking and material failure common in plastics. The Torx Plus IP6 drive ensures high torque transmission with minimal slippage, speeding up production lines and improving assembly consistency in electronics, automotive components, and consumer goods where reliable plastic fastening is critical.

Specification Summary & Compliance

This metric screw features a fully threaded design with an approximate thread pitch of 0.79 mm and a right-hand thread direction. It is manufactured to precise dimensional standards for a pan head with a 4 mm diameter. The product is confirmed to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.