S-99461A212 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in humid or demanding environments.
• Efficient thread forming in plastics with the tri-lobe shank design, eliminating the need for pre-tapping and reducing assembly time.
• Secure, high-torque driving provided by the No. 2 Phillips drive, minimizing cam-out and tool slippage during installation.
• Optimal material displacement from the blunt tip and TRS thread forming design, creating strong, vibration-resistant threads in plastic substrates.
• Wide compatibility with a No. 32 drill bit (0.116" diameter), facilitating easy and precise hole preparation for reliable fastening.
• Durable, rounded pan head offers a low-profile finish and increased bearing surface for a neat appearance and secure hold.
• Environmental compliance assurance with RoHS 3 and REACH standards, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

Engineered for robust performance in plastic assembly applications, these TRS thread forming screws deliver exceptional value by solving common industrial challenges. The tri-lobe shank cross-section and thread forming tapping method displace plastic material to create permanent, high-strength internal threads without generating chips, preventing contamination and ensuring a clean, reliable joint. Made from 18-8 stainless steel, they resist corrosion from chemicals and moisture, extending service life in electronics enclosures, automotive components, and outdoor equipment. The combination of a Phillips drive and pan head allows for efficient installation with standard tools, reducing labor time while maintaining a secure, flush fit. This design is ideal for high-volume production where vibration resistance and durability in thermoplastic and soft plastic materials are critical.

Specification Summary & Compliance

This No. 6 x 5/16" tapping screw features a 0.138" thread diameter with 19 threads per inch and fully threaded right-hand orientation for consistent engagement. Manufactured to precise dimensional standards with a Class 2A thread fit (or equivalent ISO tolerance), it ensures reliable performance in thread forming applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety requirements for hazardous substances.