S-90064A735 Length 3 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Enhanced driving efficiency through external hex head design providing superior torque transmission and reduced tool slippage
• Eliminates pre-drilling requirements with integrated drilling tip that penetrates up to 0.098" thickness in steel and sheet metal
• Secure fastening performance via thread forming technology that creates stronger, vibration-resistant connections without chip removal
• Increased bearing surface from flanged design distributes load evenly and prevents pull-through in thin materials
• Optimal thread engagement with 18 TPI fine thread pitch ensuring precise fastening in various material thicknesses
• Complete thread coverage along the 3-1/2" length provides maximum holding power across the entire fastener

Professional Applications & Engineering Value

These No. 8 zinc-plated steel tapping screws deliver exceptional value in steel and sheet metal applications where reliability is critical. The thread forming technology eliminates the need for separate tapping operations while creating stronger, more durable threads that resist loosening under vibration. The combination of external hex drive and integrated drilling tip streamlines installation processes, significantly reducing assembly time in high-volume manufacturing. Engineered with BSD tapping screw specifications, these fasteners provide consistent performance in HVAC systems, electrical enclosures, and metal fabrication where maximum drilling thickness of 0.098" meets most industrial requirements. The flanged design enhances clamping force while preventing damage to softer materials.

Specification Summary & Compliance

These thread forming screws feature precise No. 8 screw size with 0.164" thread diameter and 18 threads per inch in right-hand thread direction. Manufactured to BSD tapping screw standards with fully threaded design and Class 2A thread tolerances for consistent performance. The zinc-plated steel construction provides corrosion protection while maintaining compliance with industrial fastening specifications. Suitable for use in various steel and sheet metal applications with 3-1/2" length providing versatile fastening solutions across multiple material thicknesses.