S-90821A390 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic barrier coated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Efficient self-drilling installation with a precision No. 3 drill tip that penetrates up to 0.187" thick aluminum and sheet metal without pre-drilling.
• Enhanced load distribution thanks to the integrated 0.432" flange, reducing the risk of material pull-through and improving joint integrity.
• High-strength thread forming design creates strong, permanent threads in ductile materials, providing excellent vibration resistance.
• Quick and secure fastening with an external hex drive and flanged head, allowing for high torque application and easy installation with standard tools.
• Full threading along the 1-1/2" length ensures maximum grip and uniform stress distribution across the entire fastened material.
• Broad material compatibility specifically engineered for aluminum and sheet metal applications, delivering consistent performance in industrial assemblies.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these thread forming screws with a BSD tapping screw design eliminate the need for separate tapping operations, significantly reducing assembly time and labor costs. The galvanic barrier coated 18-8 stainless steel provides exceptional corrosion resistance, crucial for outdoor or high-moisture applications like HVAC systems, electrical enclosures, and automotive panels. The precision drilling tip (9/32" length) ensures clean, accurate holes in aluminum and sheet metal, preventing material deformation and ensuring a secure fit. The flanged hex head design offers superior clamping force, distributing pressure evenly to prevent loosening under vibration, making these screws ideal for machinery, construction, and metal fabrication where durability and reliability are paramount.

Specification Summary & Compliance

This No. 12-14 thread forming screw adheres to standard inch measurements with a thread diameter of 0.216" and 14 threads per inch, ensuring precise fit and compatibility. Manufactured as a BSD tapping screw with right-hand, fully threaded design, it meets industry standards for thread forming applications. The screw is fully compliant with RoHS and REACH environmental regulations, and its construction from 18-8 stainless steel aligns with common material specifications for corrosion-resistant fasteners in industrial use.