S-90417A131 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Enhanced material durability with Black-Oxide Steel coating for superior corrosion resistance in demanding environments.
• Secure fastening in plastics due to the tri-lobe shank design that forms strong, reliable threads without pre-tapping.
• Efficient installation with Phillips No. 2 drive, ensuring easy torque application and reduced cam-out risks.
• Full thread engagement along the 5/16" length for maximum holding power and vibration resistance in plastic assemblies.
• Reduced material stress from the thread forming action, minimizing cracking in brittle plastic components.
• Compliance with industry standards including RoHS 3 and REACH, ensuring safe and sustainable use in various applications.
• Precise fit with 16 TPI and standard pan head profile for consistent performance and flush mounting.

Professional Applications & Engineering Value

This No. 8 TRS thread forming screw is engineered to address common challenges in plastic fastening, such as strip-out and material fatigue. The tri-lobe shank cross-section displaces plastic material during installation, creating robust internal threads that enhance pull-out strength and resist loosening under vibration. Made from Black-Oxide Steel, it offers added protection against rust in humid or outdoor settings, while the Phillips pan head provides a low-profile, secure drive. Ideal for electronics enclosures, automotive trim, and consumer goods, this screw eliminates the need for threaded inserts, reducing assembly time and costs in plastic applications.

Specification Summary & Compliance

This screw features a thread diameter of 0.164" with 16 TPI and a blunt tip for easy alignment. It is fully threaded and designed for use with a No. 23 drill bit (0.154" diameter). Manufactured to standard inch measurements and TRS thread forming specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.