S-99512A641 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T20 Torx drive prevents cam-out and enables precise installation in plastic assemblies
• Excellent corrosion resistance through zinc-plated steel construction ensures long-term reliability in various environments
• Strong, permanent threads in plastics created by thread-forming TRS design eliminates need for pre-drilling and inserts
• Enhanced holding power from Tri-Lobe shank cross-section provides superior resistance to vibration and pull-out forces
• Optimized for plastic materials with No. 8 diameter and 16 TPI thread pitch specifically engineered for plastic fastening applications
• Full 1-1/4" threading delivers maximum engagement depth for secure fastening in thicker plastic components
• Industry compliance assurance with RoHS 3 and REACH regulations meets strict environmental and safety standards

Professional Applications & Engineering Value

These No. 8 x 1-1/4" T20 Torx tapping screws are specifically engineered to address common challenges in plastic assembly applications. The thread-forming TRS design with Tri-Lobe shank cross-section displaces plastic material during installation, creating strong, permanent threads without the need for pre-drilled tapping holes. This eliminates the risk of stress cracking in brittle plastics while providing exceptional resistance to vibration loosening. The zinc-plated steel construction offers reliable corrosion protection, making these plastic fasteners suitable for both indoor and outdoor applications. The T20 Torx drive system ensures maximum torque transmission without stripping, allowing for consistent installation force and reducing assembly time in high-volume production environments.

Specification Summary & Compliance

These thread forming screws feature a No. 8 thread diameter (0.164") with 16 threads per inch and right-hand threading. The fully threaded 1-1/4" length provides complete engagement capability. Manufactured to precise dimensional standards with a blunt tip and pan head style. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.