S-99397A475 Length 4 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with Torx Plus IP15 drive prevents cam-out and tool slippage during installation
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long-term reliability in harsh environments
• Optimized plastic assembly through thread forming design that creates strong, permanent threads without chip formation
• Enhanced driving stability with Tri-Lobe shank cross-section that resists rotation during installation
• Streamlined installation process with fully threaded design and blunt tip for precise positioning in plastic materials
• Secure fastening performance with 1.34mm pitch threads that provide excellent holding power in plastic substrates
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This M3.63 TRS tapping screw delivers exceptional engineering value for plastic assembly applications where reliability and precision are paramount. The 18-8 stainless steel construction provides superior corrosion resistance, making these plastic fasteners ideal for demanding environments including outdoor equipment, automotive components, and electronic enclosures. The thread forming design eliminates the risk of plastic cracking by displacing material rather than cutting it, while the Tri-Lobe shank prevents rotation during torque application. The Torx Plus IP15 drive system ensures maximum torque transfer without stripping, significantly reducing installation failures in high-volume manufacturing settings. These metric screws are engineered to solve common plastic fastening challenges including material stress, thread stripping, and inconsistent clamp load.

Specification Summary & Compliance

This precision M3.63 x 4mm tapping screw features a 1.34mm thread pitch with fully threaded construction and standard rounded pan head profile (7mm diameter, 2.6mm height). The thread forming (TRS) design requires no pre-tapped holes and is compatible with 1/8" (0.125") drill bits for plastic substrates. Manufactured to exacting standards with right-hand threading and blunt tip configuration. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for use in global manufacturing applications.