S-90315A426 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability in sheet metal assemblies.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling needs.
• Secure flush finishing with a standard oval head and 82° countersink angle for a smooth, professional appearance and minimized snagging.
• Reliable drive engagement using a No. 2 Phillips drive, providing common tool compatibility and reduced cam-out risk during installation.
• Full threading along the 5/8" length ensures maximum grip and uniform load distribution across the entire fastened joint.
• Environmental compliance assurance with RoHS 3 and REACH standards, meeting strict regulatory requirements for industrial use.
• Optimized for 0.025" maximum sheet thickness with a pointed tip for easy starting and precise alignment in metalworking applications.

Professional Applications & Engineering Value

These 18-8 stainless steel oval head tapping screws are engineered to address common challenges in sheet metal fabrication, such as material galling, corrosion, and installation efficiency. The thread forming (Type A/AB) design cold-forms mating threads in ductile metals, eliminating chips and providing vibration-resistant, high-strength fastening without pre-drilled threads. The fully threaded No. 6 screw with a 0.138" diameter and 18 TPI ensures consistent clamping force, while the corrosion-resistant material and Phillips drive simplify maintenance and assembly in HVAC, electronics enclosures, and automotive panels. This combination delivers reliable performance, reduced lifecycle costs, and compliance with industrial environmental standards.

Specification Summary & Compliance

This screw meets standard inch dimensions: No. 6 size, 5/8" length, 0.138" thread diameter, 18 TPI, and Class 2A thread fit. It features a standard oval head (0.262" diameter, 0.128" height) with an 82° countersink angle and is fully threaded with a pointed tip for thread forming applications. Manufactured from 18-8 stainless steel, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial supply chains.