S-91775A648 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel finish, extending service life in demanding industrial environments
• Efficient thread forming design creates strong, permanent threads in sheet metal without chip removal
• Optimized Phillips No. 2 drive provides secure tool engagement and reduces cam-out during installation
• Precision oval head with 82° countersink ensures flush mounting and professional finished appearance
• Fully threaded No. 6 shank with 18 TPI delivers maximum holding power across the entire 1/2" length
• Compliance with international standards including RoHS 3 and REACH for global project acceptance
• Engineered for 0.025" maximum drilling thickness in sheet metal applications for reliable performance

Professional Applications & Engineering Value

These thread forming tapping screws are specifically engineered for sheet metal applications where traditional fastening methods fall short. The Black-Oxide Steel construction combined with the A/AB tapping screw type creates durable, cold-formed threads that eliminate the need for pre-tapped holes, significantly reducing installation time and labor costs. The Phillips oval head design with precise 82° countersink angle provides a clean, finished appearance while preventing snagging in assembled products. The fully threaded No. 6 diameter with 18 TPI configuration ensures maximum thread engagement in materials up to 0.025" thickness, making these industrial tapping screws ideal for HVAC systems, electronic enclosures, automotive components, and machinery assemblies where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

These precision-engineered fasteners feature a 0.138" thread diameter with 18 TPI fully threaded design and Class 2A thread tolerances for consistent performance. The thread forming tapping method follows industry-standard specifications for A/AB type screws, while the 82° countersink angle ensures proper seating in prepared holes. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental responsibility and workplace safety. The combination of Black-Oxide surface treatment and steel substrate provides enhanced corrosion resistance suitable for various industrial environments.