S-99397A770 Length 14 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 transfer and reduced cam-out thanks to the Torx Plus IP20/T20 drive, allowing for higher tightening precision and tool longevity.
• Secure, vibration-resistant fastening in plastics achieved through the Tri-Lobe shank design, which forms strong threads without pre-tapping.
• Minimized material stress and cracking with a blunt tip and thread forming (TRS) action, ideal for delicate plastic assemblies.
• Consistent flush seating provided by the rounded pan head profile, improving aesthetics and preventing snagging.
• Full 14mm threading ensures maximum grip length and uniform load distribution across the fastened joint.
• Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This M4.55 x 14mm TRS Torx Plus tapping screw is engineered to address common challenges in plastic fastening, such as strip-out, material fatigue, and corrosion. The 18-8 stainless steel material offers excellent durability and resistance to oxidation, making it suitable for electronics enclosures, automotive trim, and outdoor equipment. Its thread forming (TRS) design with a Tri-Lobe shank creates precise, strong threads in plastic substrates without generating chips, reducing assembly time and eliminating cleanup. The Torx Plus drive (IP20/T20) ensures high torque transmission with minimal slippage, critical for automated production lines. Combined with a 1.59mm pitch and blunt tip, it minimizes stress concentration, preventing cracks in brittle plastics and ensuring reliable performance in vibration-prone applications.

Specification Summary & Compliance

This screw features a metric M4.55 size with a 14mm length and fully threaded right-hand orientation. It adheres to standard thread forming tolerances for plastic applications, with a recommended No. 23 drill bit (0.154" diameter) for optimal fit. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.