S-90356A218 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and black oxide coating, ensuring long-term reliability in harsh environments.
• Efficient thread-forming design eliminates the need for pre-tapped holes, reducing installation time and labor costs in sheet metal assemblies.
• Secure Phillips drive engagement with No. 2 size for reliable torque transmission and reduced risk of cam-out during fastening.
• Optimized pan head profile provides a low-profile, rounded finish that sits flush and resists snagging in tight spaces.
• Precise dimensional accuracy with 0.138" thread diameter and 18 TPI for consistent performance and secure fastening in sheet metal up to 0.025" thickness.
• Full threading and pointed tip enable quick starts and smooth penetration, enhancing assembly speed and reducing material stress.
• Environmental compliance assurance with RoHS 3 and REACH standards, supporting sustainable and safe industrial operations.

Professional Applications & Engineering Value

These black oxide 18-8 stainless steel tapping screws are engineered to address common challenges in sheet metal fabrication, such as corrosion-induced failure and inefficient assembly processes. The thread forming design creates strong, precise threads in pre-drilled holes without requiring tapped counterparts, minimizing tooling costs and speeding up production lines. Ideal for HVAC systems, electronic enclosures, and automotive panels, the Phillips drive ensures easy installation with standard tools, while the fully threaded shank and pointed tip facilitate quick alignment and reduced installation force. This combination of corrosion-resistant material and optimized tapping screw geometry delivers reliable performance in demanding environments, extending service life and reducing maintenance downtime.

Specification Summary & Compliance

This No. 6 x 5/8" tapping screw features a 0.138" thread diameter with approximately 18 threads per inch, conforming to standard inch-based thread forming (Type A/AB) specifications for secure fastening. The pan head style and Phillips drive ensure compatibility with common industrial tools, while the black oxide surface treatment on 18-8 stainless steel enhances durability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial applications.