S-99397A721 Length 5 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in industrial environments.
• Enhanced torque transmission and reduced cam-out using Torx Plus IP20 drive for reliable, high-torque fastening without tool slippage.
• Secure, vibration-resistant fastening in plastics through the Tri-Lobe shank design, which forms strong threads without pre-tapping.
• Streamlined assembly process with fully threaded M4.55 size and blunt tip, allowing quick installation and consistent hold in plastic substrates.
• Broad compatibility and ease of use with standard No. 23 drill bit (0.154"), reducing setup time and tooling costs.
• Durable, rounded pan head profile provides a low-profile finish and distributes clamping force evenly, minimizing material stress.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, ensuring safe use in global markets.

Professional Applications & Engineering Value

This M4.55 x 5mm TRS tapping screw is engineered for high-performance plastic assembly applications, where material integrity and fastening reliability are critical. The thread forming design with a Tri-Lobe shank displaces plastic material to create strong, permanent threads without chips, eliminating the risk of loose fittings in electronics enclosures, automotive trim, and consumer appliances. Made from zinc-plated steel, it offers excellent corrosion resistance in humid or mildly corrosive settings. The Torx Plus IP20 drive ensures maximum torque transfer, reducing operator fatigue and preventing damage to screw heads during high-volume production. With a 1.59mm pitch and right-hand thread, it delivers precise, repeatable performance for automated or manual assembly lines, enhancing overall efficiency and reducing failure rates.

Specification Summary & Compliance

This screw adheres to metric system standards with an M4.55 diameter, 5mm length, and fully threaded configuration. It features a Class 2A equivalent thread tolerance for consistent fit, and is designed for use with a No. 23 drill bit (0.154" diameter). The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.