S-97349A433 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 Stainless Steel construction for long-lasting reliability in humid or demanding environments.
• Efficient thread-forming design creates strong, permanent threads in plastic materials without pre-tapping, reducing assembly time and labor.
• Secure Phillips drive engagement with No. 2 drive size prevents cam-out and ensures consistent torque application during installation.
• Optimized pan head profile provides a low-profile, finished appearance while distributing clamp load effectively across plastic surfaces.
• Full threading along the 3/8" length maximizes grip and pull-out resistance in plastic assemblies for enhanced joint integrity.
• Compatible with standard No. 21 drill bits (0.159" diameter) for precise pilot hole preparation, minimizing material stress and cracking.
• Environmental compliance assurance with RoHS 3 and REACH regulations, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This No. 10-16 thread forming screw is specifically engineered to address common challenges in plastic fastening applications, such as material cracking, strip-out, and vibration loosening. The DST (Thread Forming) design with a blunt tip displaces plastic material rather than cutting it, creating zero clearance threads that resist back-out and maintain clamp force under dynamic loads. Manufactured from 18-8 Stainless Steel, it offers excellent corrosion resistance for outdoor enclosures, electrical housings, and automotive plastic components. The Phillips pan head combines easy installation with a low-profile finish, ideal for consumer electronics, appliance assemblies, and industrial equipment where reliability and aesthetics matter. Its right-hand threading and full-length engagement ensure uniform stress distribution, preventing localized failure in brittle plastics.

Specification Summary & Compliance

This tapping screw meets standard inch dimensions: No. 10-16 thread (0.19" diameter, 16 TPI) with a 3/8" fully threaded length, Class 2A thread tolerances, and pan head style (0.322" diameter, 0.115" height). It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring hazardous substance restriction compliance. Designed for use with No. 21 drill bits (0.159" diameter) in plastic substrates, it provides reliable performance in industrial fastener applications.