S-93035A517 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance with integrated rubber O-Ring that prevents leakage in sheet metal assemblies, ideal for environmental protection applications.
• Excellent Corrosion Resistance due to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh or humid conditions.
• Wide Temperature Tolerance with O-Ring rated from -40° to 225°F, maintaining seal integrity across extreme operational environments.
• Efficient Thread Forming Design creates strong, secure threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Secure Phillips Drive (No. 2) provides reliable torque transmission and minimizes cam-out during high-torque applications.
• Fully Threaded Shank ensures maximum grip length and uniform stress distribution for enhanced joint stability.
• Environmental Compliance meets RoHS 3 and REACH standards, supporting sustainable manufacturing and global supply chain requirements.

Professional Applications & Engineering Value

This No. 8-18 x 1/2" Phillips Pan Head Tapping Screw is engineered to address critical challenges in sheet metal fabrication and assembly. The thread forming design eliminates the need for separate tapping operations, reducing labor and potential alignment errors while creating strong, strip-resistant threads. Constructed from 18-8 Stainless Steel, it resists corrosion from moisture, chemicals, and outdoor exposure, extending service life in HVAC, electronic enclosures, and automotive components. The integrated rubber O-Ring provides a reliable seal against dust, water, and air infiltration, crucial for protecting sensitive internal components. The blunt tip and fully threaded configuration ensure consistent engagement and clamping force, making it ideal for high-vibration environments where fastener loosening could compromise system integrity.

Specification Summary & Compliance

This tapping screw features a No. 8-18 thread with 0.164" diameter and 18 threads per inch, designed for use with No. 29 drill bits (0.136" diameter). The pan head design with Phillips No. 2 drive offers secure installation, while the fully threaded shank provides consistent engagement. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restriction of hazardous substances and supporting global environmental standards for industrial fasteners.