S-99461A360 Length 5/8" 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.
• Efficient thread forming with TRS tri-lobe shank design, creating strong, vibration-resistant threads in plastic without pre-tapping.
• Optimized for plastic assembly with blunt tip and fully threaded design, preventing material cracking and ensuring secure fastening.
• Easy installation and removal using standard No. 2 Phillips drive, reducing tool slippage and assembly time.
• Precise fit and reduced play with Class 2A thread tolerances and 16 TPI, delivering consistent performance in plastic applications.
• Compliance with environmental standards including RoHS 3 and REACH, making them safe for regulated industries and global supply chains.
• Pan head design provides a low-profile, finished appearance while distributing clamp load effectively on plastic surfaces.

Professional Applications & Engineering Value

This No. 8 x 5/8" tapping screw is specifically engineered for plastic fastening challenges, where traditional screws may strip threads or cause stress fractures. The 18-8 stainless steel material offers excellent strength-to-weight ratio and corrosion resistance, ideal for outdoor enclosures, automotive trim, or electronic housings. The TRS thread forming design with a tri-lobe shank displaces plastic material to form permanent, high-holding-power threads, eliminating the need for inserts and reducing assembly steps. Combined with a Phillips drive and blunt tip, it minimizes installation torque and prevents damage to delicate plastic components, ensuring reliable performance in high-volume manufacturing.

Specification Summary & Compliance

This screw adheres to Class 2A thread tolerances with a thread diameter of 0.164" and 16 TPI for precise fit. The TRS thread forming type and fully threaded design ensure consistent engagement. It is designed for use with a No. 29 drill bit (0.136" diameter) for optimal hole preparation. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free of restricted substances for safe use in consumer and industrial products.