S-90417A143 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic thanks to the Tri-Lobe shank design that displaces material to create permanent, vibration-resistant threads
• Corrosion-resistant black-oxide steel provides a durable finish for extended service life in various industrial environments
• Effortless installation with the Phillips No. 3 drive, reducing tool slippage and speeding up assembly processes
• Reliable thread forming action ensures high strip-to-drive ratios and eliminates the need for pre-tapped holes, saving time and labor
• Full threading and blunt tip design allows for consistent engagement and prevents damage to delicate plastic components
• Precision 1/4"-10 thread with right-hand direction delivers secure, standardized fastening for a wide range of plastic assembly applications
• Environmentally compliant construction meets RoHS 3 and REACH standards, ensuring safety and regulatory adherence for global supply chains

Professional Applications & Engineering Value

These 1/4"-10 TRS tapping screws are engineered to solve critical challenges in plastic fastening, where traditional screws can fail. The thread forming (TRS) design with its Tri-Lobe shank cross-section compresses plastic material without cutting, creating zero-clearance threads that resist loosening under vibration—a common failure point in assemblies. Made from black-oxide steel, they offer enhanced corrosion resistance where moisture or chemicals are present. The combination of a pan head and Phillips drive provides a low-profile, secure fit with common tools, making them ideal for electronics enclosures, automotive trim, and consumer products where reliable, long-term performance in plastic applications is non-negotiable.

Specification Summary & Compliance

This screw features a 1/4" thread diameter with 10 threads per inch and a 3/4" length, designed with a standard Class 2A thread fit for consistent performance. The thread forming (TRS) tapping method and fully threaded blunt tip design ensure precise engagement in pre-drilled holes (recommended drill bit size A, 0.234" diameter). Manufacturing and material compliance adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they are free of restricted hazardous substances for safe use in industrial and consumer products.