S-97349A418 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in various environments
• Excellent vibration resistance through thread forming (DST) technology that creates strong, permanent threads in plastic materials
• Enhanced driving efficiency with Phillips No. 1 drive for secure installation and reduced cam-out risk
• Optimal material displacement from the blunt tip design, minimizing stress cracking in plastic substrates
• Complete thread engagement with full threading along the 3/4" length for maximum holding power
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
• Simplified installation process with precise No. 44 drill bit compatibility for accurate hole preparation

Professional Applications & Engineering Value

This No. 4-24 thread forming screw delivers exceptional performance in plastic assembly applications where traditional fastening methods often fail. The 18-8 stainless steel construction provides inherent corrosion resistance, while the DST thread forming technology creates stronger, more reliable connections by displacing plastic material rather than cutting it. This approach eliminates chip formation and reduces stress concentrations that can lead to cracking in brittle plastics. The Phillips pan head design offers a low-profile, rounded appearance with excellent drive transfer capability, making it ideal for electronic enclosures, automotive plastic components, and consumer products where both aesthetic appeal and functional reliability are critical. The combination of fully threaded engagement and precise 0.112" thread diameter ensures consistent clamping force distribution across the entire fastened joint.

Specification Summary & Compliance

This tapping screw features a No. 4-24 thread configuration with Class 2A thread tolerances, ensuring precise fit and consistent performance. The fastener is manufactured to DST thread forming standards with a blunt tip specifically engineered for plastic applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety. The screw's dimensional specifications include a 0.193" head diameter, 0.071" head height, and requires a No. 44 drill bit (0.086" diameter) for proper installation in plastic substrates.