S-90821A377 Length 1" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with galvanic barrier coated 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced drilling and fastening efficiency thanks to the integrated drilling tip that eliminates pre-drilling in materials up to 0.187" thick
- Secure, high-torque installation enabled by the external hex drive and flanged head design for improved grip and vibration resistance
- Reliable thread forming action with BSD type and fully threaded shank ensures strong, permanent fastening in aluminum and sheet metal
- Precision dimensional compliance with No. 12-14 thread size (0.216" diameter, 14 TPI) for consistent performance and interchangeability
- Optimized for challenging materials including aluminum and sheet metal, reducing installation time and labor costs
Professional Applications & Engineering Value
This thread forming tapping screw is specifically engineered to address common challenges in metal assembly, such as galvanic corrosion and the need for pre-tapped holes. The galvanic barrier coated 18-8 stainless steel construction prevents bimetallic corrosion when fastening dissimilar metals, extending service life in outdoor or corrosive settings. Its drilling tip (9/32" length) and thread forming BSD design allow for direct installation into aluminum and sheet metal up to 0.187" thick, streamlining production by eliminating separate drilling and tapping steps. The flanged hex head and external hex drive provide superior clamp load and torque transmission, ensuring reliable, vibration-resistant joints in automotive, HVAC, and industrial equipment applications.
Specification Summary & Compliance
This screw adheres to standard inch measurements with a No. 12-14 thread size (0.216" diameter, 14 TPI), fully threaded right-hand design, and thread forming (BSD) tapping method. It meets industry specifications for dimensional accuracy and is manufactured from 18-8 stainless steel with a galvanic barrier coating for enhanced performance. Compliant with RoHS and REACH environmental standards, it is suitable for use in various industrial and metalworking sectors.
