S-90315A403 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 Stainless Steel construction ensures long-term reliability in harsh environments, reducing maintenance costs.
• Type A thread forming design creates strong, permanent threads in sheet metal without pre-tapping, speeding up assembly and improving joint integrity.
• Fully threaded shank provides maximum grip and uniform stress distribution for superior holding power in thin materials.
• Phillips No. 1 drive with standard oval head offers secure tool engagement and a flush, low-profile finish for aesthetic and safety requirements.
• Precision-engineered dimensions (0.112" thread diameter, 24 TPI) ensure consistent performance and compatibility with standard No. 44 drill bits (0.086" diameter).
• 82° countersink angle and pointed tip facilitate easy insertion and self-centering in sheet metal up to 0.025" thickness.
• Compliance with RoHS 3 and REACH standards guarantees environmental safety and meets global regulatory demands for industrial components.

Professional Applications & Engineering Value

This No. 4-24 x 1/2" Phillips Oval Head Type A Thread Forming Tapping Screw is engineered to address common challenges in sheet metal assembly, such as material fatigue and corrosion. Made from 18-8 Stainless Steel, it resists rust and oxidation, ideal for outdoor or humid conditions. The thread forming action cold-forms threads into ductile metals, eliminating chips and providing vibration-resistant connections without nuts or washers. Its fully threaded design and oval head ensure a tight seal and smooth surface finish, reducing snagging risks in appliances, HVAC systems, and electronic enclosures. By integrating precise thread diameter and pitch, it minimizes stripping and enhances load distribution, making it a reliable choice for high-volume manufacturing where durability and efficiency are critical.

Specification Summary & Compliance

This screw adheres to standard inch measurements with a thread diameter of 0.112" and 24 threads per inch, ensuring precise fit in sheet metal applications. It features a Class 2A thread fit for general use, with a standard oval head profile and Phillips No. 1 drive for consistent installation. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for hazardous substance restrictions, supporting sustainable industrial practices.