S-91775A651 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel coating, extending service life in industrial environments.
• Efficient thread forming creates strong, reliable threads in sheet metal without pre-tapping, reducing assembly time.
• Secure flush finish with standard oval head and 82° countersink angle for a smooth, professional appearance.
• Optimized drive engagement using No. 2 Phillips drive minimizes cam-out and enhances torque transmission.
• High thread engagement with 18 TPI and fully threaded design ensures maximum holding power in thin materials.
• Compliance assurance with RoHS 3 and REACH regulations for safe, sustainable use in global supply chains.
• Precision fit with recommended No. 32 drill bit (0.116" diameter) for accurate, secure installations.

Professional Applications & Engineering Value

These thread forming tapping screws are engineered to address common challenges in sheet metal assembly, such as strip-out and loose fasteners. The Black-Oxide Steel material provides a durable, corrosion-resistant finish ideal for harsh conditions, while the A/AB tapping screw type with a pointed tip facilitates easy starts and strong thread formation without chips. The Phillips oval head design allows for a countersunk, flush installation, reducing snag risks and improving aesthetics in visible applications. With a 0.138" thread diameter and 18 TPI, these screws deliver reliable performance in thin-gauge metals up to 0.025" thickness, making them a go-to solution for HVAC, electronics enclosures, and automotive panels where vibration resistance and long-term integrity are critical.

Specification Summary & Compliance

This product adheres to standard inch measurements with a No. 6 screw size, 3/4" length, and fully threaded right-hand design for consistent performance. Thread specifications include a 0.138" diameter and 18 TPI pitch, compatible with Class 2A fit tolerances. The manufacturing process ensures compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for industrial safety and environmental responsibility.