S-90077A110 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments.
• Effortless installation through thread forming design, reducing the need for pre-tapped holes and speeding up assembly in sheet metal applications.
• Enhanced drive flexibility with Phillips/slotted head options, allowing compatibility with various tools and minimizing slippage during tightening.
• Maximum holding power from a fully threaded, pointed tip that securely grips materials without stripping or loosening under vibration.
• Precision fit and reduced material stress thanks to the No. 4-24 thread size and standard pan head, distributing clamp load evenly for reliable joints.
• Compliance with global safety standards including RoHS 3 and REACH, ensuring environmentally responsible and safe use in regulated industries.
• Optimized for 0.025" maximum drilling thickness, providing consistent performance in thin sheet metal without cracking or deformation.

Professional Applications & Engineering Value

This No. 4-24 x 1/2" zinc-plated steel tapping screw is engineered to address common challenges in sheet metal assembly, such as material fatigue and installation inefficiency. Its thread forming design creates strong, permanent threads in pre-drilled holes (using a No. 44 drill bit), eliminating the need for additional tapping operations and reducing labor costs. The A/AB type and fully threaded body ensure excellent pull-out resistance, while the pan head with Phillips/slotted drive offers versatility for both automated and manual fastening. Ideal for HVAC, electronics enclosures, and automotive panels, this screw delivers reliable holding power and vibration resistance, minimizing maintenance and enhancing product durability in industrial settings.

Specification Summary & Compliance

This tapping screw adheres to standard inch measurements with a thread diameter of 0.112" and 24 threads per inch, ensuring precise Class 2A fit for consistent engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances and suitable for global industrial use. The right-hand thread and pointed tip facilitate easy alignment and penetration, backed by the specified No. 44 drill bit diameter (0.086") for optimal performance in sheet metal up to 0.025" thickness.