S-99663A321 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• High-strength thread forming design creates durable, vibration-resistant threads in sheet metal without needing pre-tapped holes.
• Efficient installation and removal with an external hex/slotted drive head, allowing for high torque application and compatibility with various tools.
• Enhanced load distribution and stability from the integrated flange, reducing the risk of loosening under stress.
• Optimized for sheet metal work with a pointed tip and No. 21 drill bit compatibility, ensuring precise, secure fastening up to 0.025" thickness.
• Full threading for maximum grip along the entire 3/4" length, providing consistent holding power in demanding applications.
• Compliance with global safety standards including RoHS 3 and REACH, ensuring environmental and workplace safety.

Professional Applications & Engineering Value

This 316 stainless steel hex head tapping screw is engineered to address common challenges in sheet metal fabrication, such as material fatigue and corrosion. Its thread forming design displaces material to create strong, permanent threads, eliminating the need for separate tapping operations and reducing assembly time. The external hex/slotted drive ensures reliable torque transmission, preventing stripping during high-stress installations. With a fully threaded shank and flanged head, it provides superior clamp load and vibration resistance, making it ideal for automotive, HVAC, and electronic enclosures where durability and corrosion resistance are critical. The compatibility with a No. 21 drill bit streamlines workflow, minimizing errors in field applications.

Specification Summary & Compliance

This screw features a No. 10 size with 12 threads per inch and a 0.19" thread diameter in a right-hand thread direction, adhering to standard inch measurements for precision. It is manufactured to meet industry specifications for thread forming tapping screws (Type A/AB), ensuring consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and safe for industrial use.