S-90106A351 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated drilling tip that penetrates up to 0.187" thickness in steel and sheet metal
• Superior corrosion resistance provided by 410 stainless steel construction for demanding industrial environments
• Enhanced fastening security through the flanged hex head design that distributes load and prevents pull-through
• High installation efficiency with external hex drive allowing for secure tool engagement and torque application
• Reliable thread formation through thread forming technology that creates strong, vibration-resistant connections
• Full-length threading ensures maximum grip length and consistent holding power across the entire fastener
• Compliance-ready for industrial applications meeting RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

This No. 12 flanged hex head tapping screw delivers exceptional value in steel fabrication, stainless steel assemblies, and sheet metal applications where drilling and fastening operations need consolidation. The thread forming design creates precise mating threads in parent material without chip removal, eliminating contamination concerns in sensitive environments. The 410 stainless steel construction provides excellent strength and moderate corrosion resistance, while the drilling tip (No. 3 type) penetrates up to 0.187" thickness without pilot holes, significantly reducing installation time and labor costs. The flanged hex head combines the torque capability of hex drives with the bearing surface advantages of washers, making it ideal for high-vibration industrial equipment, metal framing, and structural assemblies where joint integrity is critical.

Specification Summary & Compliance

This BSD type tapping screw features a No. 12 size with 0.216" thread diameter and 14 TPI right-hand threads. The 2-1/2" length is fully threaded with round shank cross-section, hex head (0.313" width, 0.194" height), and 0.432" flange diameter. Manufactured to thread forming standards with Class 2A thread fit, this fastener is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental regulation adherence for industrial distribution and use.