S-99461A825 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-lasting performance in demanding environments.
• Excellent holding power in plastic due to the Tri-Lobe shank design, which prevents screw back-out and provides a secure, vibration-resistant fit.
• Efficient thread forming with 24 TPI creates strong, clean threads in plastic materials, reducing the risk of material cracking or stress.
• Widely compatible Phillips No. 1 drive allows for quick and easy installation using common tools, streamlining assembly processes.
• Optimized for plastic applications with a blunt tip and thread-forming TRS type, ensuring minimal damage during installation.
• Full environmental compliance with RoHS 3 and REACH standards, making it suitable for regulated industries and global supply chains.
• Consistent dimensional accuracy with standard pan head and fully threaded design for reliable, repeatable fastening performance.

Professional Applications & Engineering Value

This No. 3 TRS tapping screw is precision-engineered to address common challenges in plastic fastening, such as material stress and loosening under vibration. The 18-8 stainless steel provides excellent corrosion resistance, while the thread-forming TRS design with a Tri-Lobe shank displaces plastic material to create a tight, permanent thread without the need for pre-tapping. This reduces assembly time and tooling costs. The Phillips drive ensures broad compatibility, and the screw is ideal for electronics enclosures, automotive plastic components, and consumer appliances where reliable, self-tapping performance is critical. Its right-hand thread and blunt tip minimize cracking in brittle plastics, offering a robust solution for industrial applications.

Specification Summary & Compliance

This screw features a No. 3 size with a 3/8" length and 0.099" thread diameter, designed with a 24 TPI thread form for precise engagement in plastics. It complies with standard inch measurements and includes a recommended No. 46 drill bit (0.081" diameter) for optimal performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for industrial use.