S-91775A830 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating for extended service life in demanding industrial environments
• Efficient thread forming technology creates stronger, more reliable threads in sheet metal without chip removal
• Optimized oval head design provides a flush, professional finish with 82° countersink angle compatibility
• Precision Phillips No. 3 drive ensures secure tool engagement and reduces cam-out during installation
• Full threading along 1-1/4" length delivers maximum holding power and consistent fastening performance
• Simplified installation process with standard 3/16" drill bit requirement and 11 TPI thread pitch
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

These No. 12 thread forming screws are engineered specifically for sheet metal applications where reliable fastening is critical. The black-oxide steel construction provides essential corrosion protection in manufacturing environments, while the thread forming tapping method eliminates the need for separate tapping operations, reducing installation time and labor costs. The oval head profile with 82° countersink angle ensures a clean, flush finish that enhances both aesthetics and safety in assembled products. With 11 TPI precision threading and 0.216" thread diameter, these A/AB type tapping screws create strong, permanent threads in materials up to 0.025" thickness, making them ideal for HVAC systems, electrical enclosures, and automotive components where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

These thread forming screws feature precise No. 12 screw size with 1-1/4" length and 0.216" thread diameter, manufactured to standard inch measurements. The 11 TPI thread pitch and right-hand threading provide consistent fastening performance across applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and global market acceptance. The fully threaded design and pointed tip facilitate easy starting and secure penetration in sheet metal substrates, while the standard oval head profile maintains industry-compatible installation requirements.