S-99512A250 Length 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior thread-forming capability with TRS design ensures reliable, vibration-resistant fastening in plastic materials without pre-tapping.
• Enhanced torque transmission via Torx Plus IP15 drive minimizes cam-out risk, prolonging tool life and ensuring consistent installation.
• Corrosion-resistant zinc-plated steel construction provides durable protection in humid or industrial environments, extending service life.
• Tri-lobe shank design displaces material evenly during installation, reducing stress cracking in plastic substrates.
• Blunt tip and pan head profile allow for flush seating and distribute clamping force effectively, preventing material damage.
• Precise 1/8" drill bit compatibility simplifies hole preparation, speeding up assembly processes in high-volume applications.
• Full compliance with RoHS 3 and REACH standards ensures environmental safety and global regulatory acceptance for OEM exports.

Professional Applications & Engineering Value

These No. 6 x 1/4" TRS thread forming screws are engineered to address common challenges in plastic assembly, such as strip-out and material fatigue. The zinc-plated steel build offers a cost-effective balance of strength and corrosion resistance, while the tri-lobe shank and blunt tip work in tandem to compress—rather than cut—plastic polymers, creating zero-clearance threads that resist back-out under vibration. Ideal for electronics enclosures, automotive trim, and consumer appliances, the Torx Plus IP15 drive enables higher torque application with reduced operator fatigue, ensuring repeatable clamp load in automated or manual production lines. By eliminating the need for threaded inserts, these screws reduce component counts and streamline plastic fastening workflows.

Specification Summary & Compliance

This thread forming screw features a No. 6 size with 0.138" thread diameter and 19 threads per inch, manufactured to standard inch system tolerances. The fully threaded design and right-hand thread direction ensure consistent engagement, while the pan head style with 0.27" head diameter provides a low-profile finish. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for international supply chains.