S-97740A250 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 Stainless Steel construction, ideal for harsh industrial environments and long-term reliability.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and labor.
• Flush, low-profile seating with a standard flat head and 82° countersink angle for a smooth, secure finish in assembled products.
• Reliable drive engagement provided by the Phillips No. 2 drive, minimizing cam-out and ensuring consistent torque application.
• Optimized for thin materials with a maximum drilling thickness of 0.025", perfect for precision sheet metal and light-gauge applications.
• Full compliance with environmental regulations including RoHS 3 and REACH, ensuring safe, sustainable use in global supply chains.
• Versatile right-hand threading and fully threaded shank for maximum grip and holding power across the entire fastener length.

Professional Applications & Engineering Value

These No. 8-15 thread forming screws are precision-engineered to address common challenges in sheet metal fabrication, such as material stripping and weak thread retention. The 410 Stainless Steel offers excellent strength and corrosion resistance, crucial for outdoor enclosures, HVAC systems, and electronic chassis exposed to moisture or chemicals. The flat head design with an 82° countersink ensures a seamless fit, reducing snag risks and improving aesthetic appeal in finished assemblies. By utilizing a thread forming (Type A/AB) tapping method, these screws displace material to form robust, vibration-resistant threads without creating chips, enhancing joint integrity and reducing the need for secondary operations. This makes them a reliable choice for industrial fastening where durability and compliance are paramount.

Specification Summary & Compliance

This No. 8-15 screw features a thread diameter of 0.164" and approximately 15 threads per inch, adhering to standard inch measurements for consistent performance. The flat head has a diameter of 0.312" and height of 0.1", with a standard profile and pointed tip for easy insertion. It is fully threaded and right-hand oriented, compatible with a No. 29 drill bit (0.136" diameter) for optimal fit. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), these screws meet stringent environmental and safety standards, ensuring they are free of hazardous substances and suitable for global industrial applications.