S-99397A022 Length 8 mm 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.
• Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP5/T5 drive, providing secure fastening and minimizing tool slippage.
• Excellent thread-forming capability in plastics due to the Tri-Lobe shank design, creating strong, reliable threads without pre-tapping.
• Consistent, flush installation with the rounded pan head profile, offering a neat finish and even load distribution.
• Full-length threading for maximum grip across the entire 8mm length, ensuring robust holding power in plastic substrates.
• Precision blunt tip design that reduces material stress and prevents cracking in delicate plastic components.
• Compliance with environmental regulations including RoHS 3 and REACH, making them safe for various industrial applications.

Professional Applications & Engineering Value

This M1.59 x 8mm Torx Plus TRS tapping screw is engineered to address common challenges in plastic assembly, such as thread stripping and material fatigue. The 18-8 Stainless Steel offers excellent durability and resistance to oxidation, ideal for electronics, automotive interiors, and consumer goods where moisture exposure is a concern. Its thread-forming (TRS) design with a Tri-Lobe shank displaces plastic material to form precise, strong threads without chips, reducing the need for inserts and speeding up production. The Torx Plus drive (IP5/T5) ensures high torque application with minimal wear on tools, crucial for automated assembly lines. With a fine 0.6mm thread pitch and blunt tip, it minimizes stress concentration, preventing cracks in brittle plastics like ABS or polycarbonate, thereby enhancing product lifespan and reliability in plastic applications.

Specification Summary & Compliance

This screw features a metric M1.59 size with a length of 8mm, fully threaded right-hand design, and a standard pan head with a diameter of 2.95mm. It adheres to precise thread-forming standards for TRS tapping screws, with an approximate thread pitch of 0.6mm and compatibility with a No. 54 drill bit (0.055" diameter). The product is manufactured to ensure consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for industrial use.