S-90090A191 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in demanding environments
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time
• Optimized drill compatibility with No. 29 drill bit (0.136") for precise hole preparation and secure fastening
• Secure one-way drive system prevents tampering and unauthorized removal in sensitive applications
• Full threading along 3/8" length ensures maximum grip and load distribution across the entire fastener
• Regulatory compliance assurance with RoHS 3 and REACH standards for safe, environmentally responsible manufacturing
• Professional oval head profile provides a finished appearance while allowing countersunk installation in sheet metal

Professional Applications & Engineering Value

These No. 8 oval head tapping screws deliver exceptional value in sheet metal fabrication and assembly operations. The 18-8 stainless steel composition offers excellent resistance to corrosion and oxidation, making them ideal for applications exposed to moisture or harsh industrial environments. The thread forming Type A/AB design eliminates the need for separate tapping operations by cold-forming mating threads directly into the base material, resulting in stronger thread engagement and reduced assembly costs. With 15 threads per inch and 0.164" thread diameter, these screws provide reliable fastening in thin-gauge materials up to 0.025" thickness, while the one-way drive style ensures tamper-resistant security in commercial and industrial settings.

Specification Summary & Compliance

These thread forming screws feature precise Class 2A thread tolerances with right-hand threading and fully threaded design for consistent performance. The manufacturing process adheres to industry standards for Type A/AB tapping screws, ensuring proper thread form and engagement characteristics. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmentally responsible production and safe use across various industrial applications, meeting the stringent requirements of modern manufacturing specifications.