S-90380A107 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in industrial environments
• Exceptional holding power in plastic materials due to the tri-lobe shank design that prevents loosening under vibration
• Efficient thread forming technology creates strong, permanent threads in plastic without pre-tapping, reducing installation time
• Optimized torque transmission with Phillips No. 1 drive for secure fastening and reduced cam-out risk
• Full threading along 5/16" length provides maximum engagement and pull-out resistance in plastic assemblies
• Precision-engineered blunt tip ensures easy starting and prevents material damage during installation
• Compliance with international safety standards including RoHS 3 and REACH for environmentally responsible manufacturing

Professional Applications & Engineering Value

These zinc-plated steel TRS tapping screws are specifically engineered for plastic fastening applications where traditional fasteners fail. The thread forming technology creates durable mating threads in plastic substrates through material displacement rather than cutting, eliminating chip formation and subsequent weak points. The tri-lobe shank cross-section provides exceptional resistance to vibrational loosening, making these Phillips drive screws ideal for automotive trim, electronic enclosures, and consumer products where plastic components require secure, permanent fastening. The combination of 0.112" thread diameter and 20 threads per inch delivers optimal thread engagement in various plastic densities, from soft thermoplastics to reinforced composites.

Specification Summary & Compliance

This No. 4 x 5/16" TRS tapping screw features precision thread forming with right-hand threading and standard pan head profile. Manufactured to exacting dimensional standards with Class 2A thread tolerances for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability. Designed for use with No. 37 drill bit (0.104" diameter) for optimal hole preparation in plastic materials.