S-90315A479 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Efficient thread forming with Type A/AB design creates strong, permanent threads in sheet metal without pre-tapping.
• Secure and flush installation thanks to the oval head and 82° countersink angle, providing a smooth finish and reduced snagging.
• Optimized for sheet metal applications, designed to work with a No. 29 drill bit (0.136" diameter) for precise, secure fastening.
• Enhanced drive stability with Phillips No. 2 drive, reducing cam-out and ensuring consistent torque application.
• Full threading along the 1-1/4" length maximizes grip and load distribution in materials up to 0.025" thick.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards.

Professional Applications & Engineering Value

These No. 8 x 1-1/4" stainless steel tapping screws are engineered to address common challenges in sheet metal fabrication, such as material fatigue and corrosion. The 18-8 Stainless Steel offers excellent resistance to rust and oxidation, extending the lifespan of assemblies in humid or outdoor settings. The thread forming Type A/AB design displaces material to create robust, vibration-resistant threads without chips, reducing the risk of loosening in dynamic applications. With a Phillips oval head and precise 82° countersink angle, these screws sit flush, minimizing protrusion and improving safety in machinery, HVAC systems, and electronic enclosures. This combination of corrosion-resistant materials and efficient threading ensures reliable performance in industrial fastening, reducing maintenance costs and downtime.

Specification Summary & Compliance

This screw features a No. 8 size with a thread diameter of 0.164" and approximately 15 threads per inch, ensuring precise fit in standard sheet metal applications. It complies with common inch-system tolerances for threading and head dimensions, including a head diameter of 0.312" and fully threaded shank. The product adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for use in regulated industries. Designed for use with a No. 29 drill bit (0.136" diameter), it supports efficient installation in materials up to 0.025" thickness, meeting typical industrial standards for durability and safety.