S-90485A270 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in humid or demanding environments.
• Efficient thread forming in plastic materials thanks to the tri-lobe shank design, reducing installation torque and preventing material stress cracks.
• Secure and flush mounting with a standard flat head profile and 82° countersink angle, providing a smooth finished surface.
• Reliable drive engagement using a Phillips No. 2 drive, minimizing cam-out and ensuring consistent fastening control.
• Optimized for plastic applications with a blunt tip and fully threaded design, delivering strong pull-out resistance without pre-drilling in many cases.
• Compliance with environmental standards including RoHS 3 and REACH, making them suitable for regulated industries and global supply chains.
• Precise dimensional accuracy with a 0.164" thread diameter and 16 TPI, ensuring consistent performance and interchangeability.

Professional Applications & Engineering Value

Engineered specifically for plastic fastening applications, this No. 8 x 5/8" TRS screw addresses common challenges like material cracking and strip-out. The 18-8 stainless steel provides excellent strength and corrosion resistance, while the tri-lobe shank and thread forming design displace plastic material to create strong, durable threads without chips. This reduces assembly time and improves joint integrity in plastic components used in electronics, automotive trim, and consumer goods. The Phillips flat head ensures a clean, recessed finish, and compliance with RoHS and REACH supports use in environmentally sensitive projects.

Specification Summary & Compliance

This tapping screw meets standard inch dimensions: No. 8 size, 5/8" length, 0.164" thread diameter, and 16 TPI. It features a tri-lobe shank cross-section for thread forming in plastics, with a Phillips No. 2 drive and standard flat head profile. The screw is fully threaded and designed for use with a No. 29 drill bit (0.136" diameter). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for various industrial applications.