S-93882A542 1/4"-20 x 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• Enhanced holding power through thread forming design that creates strong, permanent threads in materials like steel, aluminum, and brass without pre-tapping.
• Easy installation and removal with external hex/slotted drive, providing secure tool engagement and reducing assembly time.
• Increased load distribution thanks to the flanged design, minimizing surface damage and improving joint integrity in sheet metal applications.
• Reliable coarse UNC threading for quick engagement and vibration resistance in various metal substrates, from cast iron to aluminum.
• Full threading along the 1" length ensures maximum grip and uniform stress distribution for consistent fastening performance.
• Compliance with environmental standards including RoHS 3 and REACH, making them safe for global industrial supply chains.

Professional Applications & Engineering Value

These 1/4-20 UNC thread forming tapping screws are engineered to address common challenges in metal fastening, such as strip-out and loosening under vibration. Made from zinc-plated steel, they offer excellent corrosion protection while the thread forming action displaces material to create precise, tight-fitting threads without chips. This eliminates the need for separate tapping operations, reducing labor and tooling costs in assemblies involving steel, aluminum, brass, and cast iron. The flanged hex head design provides a larger bearing surface, preventing pull-through in thin sheet metal and ensuring reliable performance in automotive, machinery, and construction applications where durability and compliance with RoHS and REACH standards are critical.

Specification Summary & Compliance

This product features UNC coarse threads with a size of 1/4"-20, fully threaded along a 1" length, and is designed for use with a No. 2 drill bit (0.221" diameter). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial fasteners. The external hex drive and blunt tip support efficient installation in thread forming applications across various metals.