S-90190A110 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments.
• Efficient thread forming with pointed tip and A/AB type design for secure, vibration-resistant fastening in sheet metal without pre-tapping.
• Easy installation and removal thanks to the Phillips No. 1 drive, reducing tool slippage and assembly time.
• Maximum material compatibility with fully threaded shank and 24 TPI, providing strong holding power in thin sheet metal up to 0.025" thickness.
• Reliable pan head design offering a low-profile, rounded finish that sits flush for smooth surfaces and even load distribution.
• Compliance with global standards including RoHS 3 and REACH, ensuring safe, environmentally responsible use in regulated industries.
• Precision fit with standardized No. 4-24 thread diameter and 1/2" length, enabling consistent performance in repetitive applications.

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are engineered to address common challenges in sheet metal fastening, such as material fatigue and loosening under stress. The thread forming design creates strong, permanent threads in pre-drilled holes (using No. 44 drill bit), eliminating the need for nuts or washers and reducing assembly costs. With a Phillips drive and pan head, they provide quick installation in tight spaces, ideal for HVAC systems, automotive panels, and electrical enclosures. The fully threaded shank ensures uniform load distribution, while the corrosion-resistant coating extends service life in outdoor or humid conditions, making them a reliable choice for industrial and construction projects demanding durability and efficiency.

Specification Summary & Compliance

This screw features a No. 4-24 thread size with right-hand direction, 1/2" length, and pan head style, adhering to standard inch measurements for precise fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met. The thread forming tapping method and A/AB type support consistent performance in sheet metal applications, with a maximum drilling thickness of 0.025" for reliable fastening in thin materials.