S-99512A635 Length 1 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T15 Torx drive design, reducing cam-out and tool slippage during installation
• Enhanced corrosion resistance through zinc-plated steel construction, ensuring longevity in various environments
• Clean, chip-free installation in plastic materials with TRS thread forming technology, eliminating debris and material damage
• Secure, vibration-resistant fastening thanks to tri-lobe shank design that creates strong, permanent threads in plastic
• Optimized plastic engagement with 19 threads per inch and blunt tip for controlled penetration without splitting materials
• Simplified installation process using standard 1/8" drill bits, reducing setup time and tooling requirements
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing practices

Professional Applications & Engineering Value

These No. 6 x 1-3/4" T15 Torx zinc-plated steel tapping screws are specifically engineered for plastic fastening applications where material integrity and installation cleanliness are critical. The TRS thread forming design creates strong, permanent threads in plastic substrates without generating chips or debris that could compromise electronic components or moving parts. The tri-lobe shank cross-section provides superior resistance to vibration loosening, making these screws ideal for plastic assembly in automotive trim, electronics enclosures, and consumer products. The combination of zinc-plated steel construction and Torx drive system ensures reliable performance in production environments where consistent torque application and corrosion resistance are essential for long-term reliability.

Specification Summary & Compliance

These thread forming screws feature a No. 6 screw size with 0.138" thread diameter and 19 threads per inch, designed for use with 1/8" drill bits in plastic materials. The fasteners maintain precise dimensional tolerances appropriate for TRS thread forming applications and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions and chemical safety in manufacturing applications.