S-90315A401 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel ensures long-term reliability in humid or demanding industrial environments, reducing replacement costs.
• Thread forming Type A/AB design creates strong, permanent threads in sheet metal without pre-tapping, saving assembly time and labor.
• Phillips oval head with 82° countersink angle provides a smooth, flush finish for improved aesthetics and safety in visible applications.
• Fully threaded shank offers maximum grip and holding power across the entire length, enhancing joint integrity in sheet metal assemblies.
• Precise 24 TPI thread pitch delivers secure fastening with minimal risk of stripping, ensuring consistent performance in high-vibration settings.
• RoHS 3 and REACH compliance guarantees adherence to strict environmental regulations, supporting sustainable and safe manufacturing practices.
• Optimized for No. 44 drill bit (0.086" diameter) simplifies installation with standardized tooling, reducing errors and improving workflow efficiency.

Professional Applications & Engineering Value

These No. 4 x 3/8" tapping screws are engineered to address common challenges in sheet metal fabrication, where material thinness and vibration resistance are critical. The 18-8 stainless steel construction provides excellent corrosion resistance, ideal for outdoor enclosures, HVAC systems, and electronic chassis exposed to moisture. The thread forming Type A/AB technology eliminates the need for separate tapping operations, as it cold-forms threads directly into pre-drilled holes, reducing assembly steps and minimizing metal fatigue. The Phillips oval head with an 82° countersink angle ensures a seamless, low-profile installation that prevents snagging and meets aesthetic requirements in consumer products or machinery. With a right-hand thread and fully threaded design, these screws distribute clamping force evenly, enhancing durability in dynamic loads. This combination of material strength and precision threading makes them a reliable choice for reducing maintenance and improving product lifespan in industrial settings.

Specification Summary & Compliance

This product adheres to standard inch measurements with a thread diameter of 0.112" and 24 TPI precision, ensuring compatibility with common sheet metal thicknesses up to 0.025". The thread forming process follows industry-accepted practices for Type A/AB tapping screws, providing consistent performance without secondary operations. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted substances and supporting environmental safety in global supply chains.