S-90087A546 1/4"-20 x 1 1/2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Excellent thread-cutting performance in aluminum, brass, cast iron, and sheet metal without requiring pre-tapped holes
• Enhanced driving efficiency with Phillips No. 3 drive design, reducing installation time and tool slippage
• Reliable coarse UNC threading (1/4"-20) providing strong holding power and vibration resistance in various materials
• Full 1 1/2" threading ensures maximum engagement and load distribution across the entire fastener length
• Industry-standard compliance with ASME B18.6.3 specifications, guaranteeing dimensional accuracy and performance reliability
• Environmental responsibility through RoHS 3 compliance, meeting strict international regulatory requirements

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional value in industrial assembly applications where thread-cutting capability is critical. The Type F thread design and coarse UNC 1/4"-20 threading enable efficient installation in aluminum, brass, cast iron, and sheet metal without tap preparation, significantly reducing assembly time and labor costs. The Phillips No. 3 drive system provides secure tool engagement during high-torque applications, while the zinc plating offers essential corrosion protection for extended service life in challenging environments. These tapping screws are engineered to maintain thread integrity under vibration and load stresses, making them ideal for construction, metal fabrication, and industrial equipment assembly where reliable fastening solutions are paramount.

Specification Summary & Compliance

These 1/4"-20 tapping screws feature precise UNC coarse threading with standard thread tolerances and are manufactured to exact ASME B18.6.3 specifications SAE J933. The fasteners maintain dimensional accuracy throughout production, ensuring consistent performance and interchangeability. Compliance with RoHS 3 (2015/863/EU) regulations confirms adherence to environmental standards, while the zinc-plated steel construction meets industry requirements for corrosion resistance and mechanical strength in industrial applications.