S-90087A538 1/4"-20 x 5/8" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• Effortless installation through Type F thread-cutting design, eliminating the need for pre-tapped holes in materials like aluminum and cast iron.
• Enhanced driving efficiency with a Phillips No. 3 drive, providing secure torque transfer and reducing cam-out risks during assembly.
• Maximum holding power from fully threaded UNC coarse spacing, delivering reliable fastening in sheet metal and brass applications.
• Broad material compatibility for use in aluminum, brass, cast iron, and sheet metal, streamlining inventory for diverse projects.
• Standardized dimensional accuracy with ASME B18.6.3 compliance, ensuring consistent fit and performance in high-volume production.
• Environmental and safety adherence by meeting RoHS 3 regulations, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

These 1/4"-20 tapping screws are engineered to solve common industrial fastening challenges, such as reducing assembly time and minimizing part failure. The zinc-plated steel material resists rust and wear, while the Type F thread-cutting tip and UNC coarse threads create precise, durable threads in ductile materials like aluminum, brass, and cast iron, eliminating the need for separate tapping operations. This design is ideal for sheet metal assemblies, HVAC systems, and machinery where vibration resistance and strong pull-out strength are critical. By integrating Phillips drive compatibility, these screws support efficient manual or automated installation, enhancing productivity in industrial tapping screw applications without compromising on reliability.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with standard dimensional tolerances, ensuring precise fit in accordance with ASME B18.6.3 specifications. It is fully threaded with a blunt tip and round shank for consistent performance. Compliance includes RoHS 3 (2015/863/EU) for environmental safety, confirming the absence of hazardous substances, and adherence to industry standards for reliable use in various metal fastening scenarios.