S-91632A148 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and long-term reliability.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Optimized for 0.025" maximum drilling thickness in sheet metal applications, ensuring secure fastening in thin materials without stripping.
• Slotted drive compatibility with standard tools provides straightforward installation and removal for maintenance flexibility.
• Fully threaded shank delivers maximum grip and uniform load distribution along the entire fastener length.
• Precision-engineered pan head offers a low-profile, rounded finish that sits flush while preventing snagging.
• Compliant with RoHS 3 and REACH regulations, guaranteeing safe, environmentally responsible use in global supply chains.

Professional Applications & Engineering Value

This No. 6-18 tapping screw is engineered to address common challenges in sheet metal assembly, where material thinness and corrosion are critical concerns. The 18-8 Stainless Steel composition provides excellent resistance to rust and chemical exposure, extending service life in demanding conditions like outdoor enclosures or HVAC systems. Its thread forming (A/AB type) design displaces material rather than cutting it, resulting in tighter, stronger threads that resist vibration loosening—ideal for right-hand threading applications in automotive, electronics, and machinery. The slotted pan head ensures easy access with standard drivers, while the pointed tip and 0.138" thread diameter enable quick starts and consistent penetration. By specifying a No. 32 drill bit (0.116"), installers achieve precise hole alignment, minimizing the risk of material deformation and ensuring reliable performance in assemblies up to 0.025" thickness.

Specification Summary & Compliance

This fastener features a No. 6 screw size with 18 threads per inch and a 1/2" length, manufactured to standard inch system tolerances for consistent fit. The thread forming tapping method and A/AB screw type comply with industry threading practices, while the fully threaded design ensures complete engagement. It is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting stringent environmental and safety standards for industrial use.