S-93035A506 Length 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Reliable sealing performance with integrated rubber O-ring that maintains integrity across temperatures from -40° to 225°F, preventing leaks in demanding environments
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term durability in humid or corrosive industrial settings
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling requirements
• Secure Phillips No. 2 drive system provides positive torque transmission and prevents cam-out during high-torque installation
• Optimized pan head profile offers excellent bearing surface for consistent clamping force while maintaining low-profile appearance
• Precision dimensional compliance with standard inch measurements ensures perfect compatibility with No. 29 drill bits (0.136") for proper hole preparation
• Environmental regulation compliance meeting RoHS 3 and REACH standards for safe use in regulated industries worldwide

Professional Applications & Engineering Value

This No. 8-18 sealing tapping screw delivers critical engineering solutions for sheet metal assemblies requiring both mechanical fastening and environmental protection. The thread forming Type B design displaces material rather than removing it, creating stronger thread engagement in thin-gauge metals while minimizing stress concentrations. The integrated rubber O-ring provides immediate sealing against moisture, dust, and air infiltration, making it ideal for HVAC systems, electronic enclosures, and outdoor equipment. Manufactured from 18-8 stainless steel, these screws maintain structural integrity in corrosive environments where carbon steel fasteners would fail. The combination of fully threaded blunt tip and precise dimensional control ensures consistent performance in high-volume manufacturing applications, reducing assembly time and improving product reliability.

Specification Summary & Compliance

This Type B thread forming screw features standard inch dimensions with 0.164" thread diameter and 18 threads per inch, manufactured to industry-standard tolerances for reliable performance. The Phillips No. 2 drive and pan head design comply with standard fastener specifications for consistent installation. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets. Designed specifically for use with No. 29 drill bits (0.136" diameter) in sheet metal applications, this screw provides predictable, repeatable performance in industrial fastening systems.