S-99461A315 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life in plastic assemblies.
• Excellent holding power in plastic materials due to the tri-lobe shank design, which displaces material to create a secure, vibration-resistant fit.
• Efficient and reliable installation with the Phillips No. 2 drive, providing common tool compatibility and reducing cam-out risks.
• Optimized thread-forming action for plastic, with a blunt tip and fully threaded design ensuring consistent engagement and minimizing stress cracking.
• Precision sizing for reliable performance, using a No. 32 drill bit (0.116" diameter) to create a perfect pilot hole for the 0.138" thread diameter.
• Compliance with major environmental and safety regulations, including RoHS 3 and REACH, ensuring suitability for regulated industrial applications.
• Versatile pan head style offers a standard, low-profile rounded head for a finished appearance and good torque transmission.

Professional Applications & Engineering Value

These 316 Stainless Steel TRS plastic tapping screws are engineered to solve common fastening challenges in plastic assembly. The thread-forming (TRS) design with a tri-lobe shank cross-section cuts and forms mating threads in plastic without generating chips, eliminating the risk of contamination in sensitive components. This creates a zero-clearance fit that resists loosening under vibration, a critical advantage in automotive trim, electronic enclosures, and consumer goods. The fully threaded body and blunt tip ensure maximum thread engagement and reduce the potential for boss cracking, providing a reliable, high-strength connection. The Phillips drive and specified drill bit size (No. 32) streamline the installation process, reducing assembly time and improving production line efficiency for industrial manufacturers.

Specification Summary & Compliance

This screw is a No. 6 x 3/4" size with a thread diameter of 0.138" and 19 threads per inch. It features a right-hand thread direction and is fully threaded. The screw conforms to the standard dimensional and performance expectations for TRS (Thread Rolling Screw) types used in plastic. This product is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent international standards for hazardous substance restrictions.