S-90417A134 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic due to the Tri-Lobe shank cross-section that displaces material to form strong, reliable threads without cutting
• Enhanced corrosion resistance provided by the Black-Oxide Steel finish, extending the screw's service life in various environments
• Reduced risk of cam-out and stripped heads with the Phillips No. 2 drive, ensuring efficient and secure installation
• Excellent resistance to vibration loosening because the thread-forming (TRS) design creates a tight, zero-clearance fit in plastic substrates
• Streamlined installation process with a blunt tip and full threading, allowing for straightforward driving and consistent engagement
• Guaranteed dimensional compatibility with a standard No. 23 drill bit (0.154" diameter), simplifying hole preparation
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring they are safe for use in regulated industries

Professional Applications & Engineering Value

These No. 8 x 5/8" TRS Tapping Screws are precision-engineered for robust fastening in plastic applications. The thread-forming technology is a key advantage; as the Tri-Lobe shank is driven in, it cold-forms a mating thread in the plastic, eliminating chips and creating a superior, high-strength connection that is highly resistant to vibration and pull-out. This is critical in assemblies where plastic components are subject to dynamic loads or thermal cycling. The Black-Oxide Steel material offers a durable, mildly corrosion-resistant finish, while the Phillips drive and standardized dimensions ensure compatibility with common assembly tools and processes, reducing installation time and improving production line efficiency.

Specification Summary & Compliance

This screw conforms to the TRS (Thread Rolling Screw) standard for thread-forming fasteners. Key dimensional specifications include a No. 8 screw size, a 5/8" length, a 16 TPI thread pitch, and a head designed for a Phillips No. 2 drive. The product is manufactured to be fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for industrial components.