S-90821A553 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic barrier coated 18-8 stainless steel construction, ideal for harsh industrial environments
• Efficient thread-forming installation using BSD tapping method eliminates the need for pre-drilling in aluminum and sheet metal
• Integrated drilling capability with No. 3 drill tip that penetrates up to 0.21" thickness, reducing assembly time and tool requirements
• Enhanced load distribution through flanged design that eliminates the need for separate washers
• Secure fastening with external hex drive providing reliable torque transmission during installation
• Full thread engagement along the 1" length ensures maximum holding power in various material thicknesses
• Wide material compatibility specifically engineered for aluminum and sheet metal applications

Professional Applications & Engineering Value

This 1/4"-14 flanged hex head tapping screw delivers exceptional engineering value by addressing common challenges in metal fabrication and assembly operations. The thread-forming BSD design creates strong, permanent threads in ductile materials like aluminum and sheet metal without generating chips, preventing contamination in sensitive applications. The galvanic barrier coated 18-8 stainless steel construction provides critical protection against galvanic corrosion when fastening dissimilar metals, extending service life in demanding environments. The integrated No. 3 drilling tip combined with the external hex drive enables rapid installation in production settings, while the flanged head distributes clamping force evenly to prevent material distortion. This comprehensive solution streamlines assembly processes while maintaining structural integrity across automotive, HVAC, and electronic enclosure applications.

Specification Summary & Compliance

This tapping screw features precise 1/4"-14 thread specifications with right-hand thread direction and fully threaded design for consistent performance. Manufactured to BSD standards for thread-forming applications, the screw maintains dimensional accuracy with 3/8" hex head width and 0.52" flange diameter for proper tool engagement. The construction utilizes 18-8 stainless steel with galvanic barrier coating for enhanced corrosion protection, complying with industry standards for material quality and environmental regulations including RoHS and REACH requirements.