S-90380A309 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic materials thanks to the Tri-Lobe shank design that creates strong, permanent threads without chipping or cracking
• Enhanced corrosion resistance provided by the zinc-plated steel construction, ensuring long-term durability in various industrial environments
• Efficient thread-forming installation eliminates the need for pre-tapped holes, reducing assembly time and labor costs
• Reliable drive engagement with the Phillips No. 3 drive style, minimizing cam-out and ensuring secure fastening
• Optimized for plastic applications with a blunt tip and fully threaded design that prevents material damage while providing consistent grip
• Precise compatibility with standard No. 8 drill bits (0.199" diameter) for accurate hole preparation and smooth installation
• Compliance with environmental regulations including RoHS 3 and REACH, making them suitable for global industrial supply chains

Professional Applications & Engineering Value

These No. 12 x 3/4" zinc-plated steel TRS tapping screws are engineered specifically for plastic fastening applications where reliability and material integrity are critical. The thread-forming technology combined with the Tri-Lobe shank cross-section creates tight, secure threads in plastic substrates without generating chips, eliminating the risk of contamination in sensitive assemblies. This design is particularly valuable in industrial applications involving electrical enclosures, automotive components, and consumer products where vibration resistance and long-term performance are essential. The zinc-plated steel construction provides corrosion protection while maintaining the strength needed for demanding environments. With their Phillips drive and precise dimensional specifications, these screws enable efficient installation while preventing material stress concentration that can lead to plastic failure.

Specification Summary & Compliance

These tapping screws feature a No. 12 size with 3/4" length and fully threaded 0.216" diameter with approximately 11 threads per inch. The thread forming (TRS) design with right-hand threading and Tri-Lobe shank conforms to industry standards for plastic fastening applications. Manufactured from zinc-plated steel with pan head style and Phillips No. 3 drive, these screws are designed for use with No. 8 drill bits (0.199" diameter). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current international standards for restricted substances.