S-90122A338 1/4"-20 x 1 1/2" 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
- Ultra-corrosion-resistant coating extends service life in harsh environments, reducing replacement frequency and maintenance costs
- Thread forming CSD design creates strong, permanent threads in aluminum and sheet metal without chip removal, improving joint integrity
- Integrated drilling tip eliminates pre-drilling requirements, saving installation time and labor costs for materials up to 0.236" thick
- External hex head with flange provides superior torque transmission and increased bearing surface for secure fastening
- UNC coarse threading ensures rapid installation and reliable performance in soft materials like aluminum
- Full threading along 1-1/2" length offers maximum grip range and adjustment flexibility in various material thicknesses
- RoHS 3 compliance guarantees environmental safety and regulatory acceptance for industrial applications
Professional Applications & Engineering Value
These hex head tapping screws solve critical challenges in aluminum and sheet metal fabrication where corrosion resistance and installation efficiency are paramount. The Ultra-Corrosion-Resistant Coated Alloy Steel construction prevents degradation in demanding environments, while the thread forming action creates precisely mated threads that resist vibration loosening. The No. 4 drilling tip penetrates materials without pilot holes, eliminating alignment issues and drill bit breakage risks. This combination makes these UNC coarse thread screws ideal for HVAC systems, electronic enclosures, and automotive assemblies where fast installation and long-term reliability are essential engineering requirements.
Specification Summary & Compliance
This 1/4"-20 x 1-1/2" tapping screw features UNC coarse threads with standard Class 2A tolerances for consistent performance. Manufactured to CSD type thread forming specifications with right-hand threading and fully threaded shank design. The product complies with RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across industrial applications while meeting international standards for aluminum and sheet metal fastening requirements.
