S-90087A903 3/8"-16 x 3/4" ASME B18.6.3, SAE J933 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-cutting design that creates precise mating threads in materials like aluminum, brass, and cast iron without pre-tapping.
• High-torque driving capability with Phillips No. 4 drive, providing secure fastening and reducing cam-out risks during assembly.
• Exceptional holding power from UNC coarse threads and fully threaded shank, delivering reliable vibration resistance in sheet metal and heavy-duty applications.
• Wide material compatibility engineered for use in aluminum, brass, cast iron, and sheet metal, simplifying inventory for diverse projects.
• Optimized drill bit pairing with recommended R drill bit (0.339" diameter), ensuring proper hole sizing for maximum thread engagement and strength.
• Industry-standard reliability meeting ASME B18.6.3 and SAE J933 specifications, guaranteeing consistent quality and performance for professional use.

Professional Applications & Engineering Value

These 3/8"-16 UNC thread cutting screws deliver critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion protection in harsh environments, while the thread-cutting tapping method (Type F) eliminates the need for separate tapping operations in materials like aluminum, brass, cast iron, and sheet metal. This significantly reduces installation time and labor costs in production lines. The coarse UNC thread profile ensures rapid installation and superior resistance to vibration loosening, making these Phillips drive screws ideal for automotive, machinery, and metal fabrication applications where reliability is paramount. The fully threaded design maximizes surface contact for enhanced pull-out strength in both thin and thick materials.

Specification Summary & Compliance

These tapping screws feature 3/8"-16 UNC coarse threads with standard Class 2A tolerance for consistent fit. The zinc-plated steel finish meets industrial corrosion resistance requirements while the Phillips No. 4 drive ensures compatibility with standard tools. Manufacturing and performance comply with ASME B18.6.3 and SAE J933 specifications, ensuring dimensional accuracy and mechanical properties for professional applications. The screws are designed for use with R drill bit (0.339" diameter) and are suitable for various industrial materials including aluminum, brass, cast iron, and sheet metal.