S-99461A720 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically exposed industrial environments.
• Efficient thread forming design with tri-lobe shank creates strong, permanent threads in plastic without pre-tapping, reducing assembly time.
• High torque resistance from Phillips No. 1 drive ensures secure installation and minimizes cam-out during high-speed driving.
• Optimized for plastic substrates with 28 TPI and blunt tip to prevent material cracking and ensure reliable holding power.
• Consistent dimensional accuracy with standard pan head profile for uniform seating and flush surface finish.
• Full compliance with RoHS 3 and REACH regulations, ensuring safe use in consumer products and electronics.
• Versatile 5/16" length provides ample engagement for various plastic thicknesses in automotive, electronics, and appliance assemblies.

Professional Applications & Engineering Value

Engineered specifically for plastic fastening applications, these TRS thread forming screws eliminate the need for threaded inserts or adhesives. The tri-lobe shank design displaces plastic material during installation, creating zero-clearance threads that resist vibration loosening and provide superior pull-out strength. Made from 18-8 stainless steel, they maintain integrity in outdoor equipment, electrical enclosures, and automotive components where moisture resistance is critical. The Phillips drive system offers familiar, reliable installation across production lines, while the blunt tip prevents stress concentration in brittle polymers. These features combine to solve common plastic assembly challenges including strip-out, boss cracking, and corrosion-induced failure.

Specification Summary & Compliance

This No. 2 TRS tapping screw features a 5/16" length with fully threaded tri-lobe shank and standard Class 2A thread tolerances. The screw conforms to thread forming screw standards for plastic applications with recommended No. 48 drill bit (0.076" diameter) for proper hole preparation. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restriction of hazardous substances for industrial and consumer applications.