S-97975A121 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction, ideal for demanding industrial environments
• Excellent holding power in plastic materials through advanced thread forming technology that creates strong, permanent threads
• Reliable driving performance with Phillips No. 1 drive design that minimizes cam-out and ensures secure installation
• Optimized for plastic applications with DST screw type specifically engineered for plastic substrates
• Full-length threading provides maximum engagement and pull-out resistance throughout the entire fastener length
• Environmental compliance assurance with RoHS 3 and REACH compliance for global market acceptance
• Precision compatibility with No. 44 drill bit (0.086" diameter) for perfect hole preparation and installation

Professional Applications & Engineering Value

This No. 4-24 tapping screw delivers exceptional engineering value for plastic assembly applications where corrosion resistance and reliable fastening are critical. The 410 stainless steel construction provides superior durability in harsh environments, while the thread forming technology eliminates the need for tapping operations by creating strong, load-bearing threads directly in plastic materials. The Phillips pan head design with No. 1 drive size offers excellent torque transmission and seating characteristics, preventing damage to plastic components during installation. With fully threaded configuration and right-hand threading, this DST screw ensures maximum engagement in thermoplastic and thermoset applications, making it ideal for electronics enclosures, automotive plastic components, and consumer products where vibration resistance and long-term performance are essential.

Specification Summary & Compliance

This precision-engineered fastener features a 0.112" thread diameter with 24 threads per inch and 5/16" length for consistent performance. The screw meets industry standards for thread forming applications in plastic substrates and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Manufactured to precise dimensional tolerances with standard pan head profile and blunt tip design optimized for plastic fastening applications, ensuring reliable performance and regulatory compliance across global markets.