S-99461A284 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Excellent thread-forming capability in plastics, creating strong, permanent threads without pre-tapping for faster assembly
• Enhanced driving stability and reduced cam-out with the Phillips No. 1 drive and Tri-Lobe shank design
• Reliable holding power from the fully threaded, right-hand TRS design, ensuring secure fastening in plastic materials
• Optimized for plastic applications with a blunt tip and standard pan head for a flush finish and material-friendly installation
• Environmental compliance assurance, meeting RoHS 3 and REACH standards for safe, sustainable use in regulated industries
• Precision fit and consistent performance with specified No. 44 drill bit (0.086" diameter) for accurate hole preparation

Professional Applications & Engineering Value

This No. 4 x 3/8" 316 Stainless Steel TRS tapping screw is engineered to address common challenges in plastic assembly, such as material cracking, stripping, and corrosion-induced failure. The thread forming (TRS) design displaces plastic material to create robust, high-strength threads without generating chips, minimizing stress and ensuring a tight, vibration-resistant fit. The Tri-Lobe shank cross-section enhances torque transmission and reduces the risk of drive slippage, while the corrosion-resistant 316 stainless steel provides long-term durability in humid, chemical, or outdoor environments. Ideal for plastic enclosures, automotive components, and electronic housings, this screw delivers reliable performance, reduced assembly time, and lower total cost of ownership for industrial applications.

Specification Summary & Compliance

This screw features a 0.112" thread diameter with approximately 20 threads per inch and a 3/8" length, designed for use with a No. 44 drill bit (0.086" diameter). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to industry standards for hazardous substance restrictions and material safety.