S-90096A396 12-24 x 1 1/4" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust in demanding industrial environments
• Excellent material penetration through Type F thread cutting design that creates strong threads in aluminum, brass, cast iron and sheet metal
• Enhanced installation efficiency with flanged hex head design that eliminates need for separate washers and provides secure seating
• Maximum holding power through full threading that ensures complete engagement along the entire 1-1/4" length
• Reliable performance compliance meeting ASME B18.6.3 and SAE J933 standards for consistent quality and dimensional accuracy
• Optimized drill compatibility designed specifically for No. 11 drill bits (0.191" diameter) to streamline installation processes
• Environmental regulation compliance with RoHS 3 (2015/863/EU) standards for safe, sustainable manufacturing

Professional Applications & Engineering Value

These 12-24 UNC zinc-plated steel tapping screws deliver exceptional engineering value in demanding metal assembly applications. The Type F thread cutting design with coarse UNC thread spacing enables superior material displacement, creating strong, permanent threads without pre-tapped holes. This eliminates the need for additional tapping operations in aluminum, brass, cast iron, and sheet metal components, significantly reducing assembly time and labor costs. The flanged hex head with external drive provides excellent torque transmission while distributing clamping force evenly, preventing material distortion in thin-gauge applications. Manufactured from high-strength zinc-plated steel, these screws maintain structural integrity under vibration and load stress, making them ideal for automotive, machinery, and structural metal fabrication where reliability is critical.

Specification Summary & Compliance

These tapping screws feature precise 12-24 UNC coarse threads with full threading along the 1-1/4" length and are manufactured to Class 2A thread tolerances. The screws comply with ASME B18.6.3 specifications and SAE J933 standards for dimensional accuracy and performance. The Type F thread cutting design is optimized for use with No. 11 drill bits (0.191" diameter). Environmental compliance includes RoHS 3 (2015/863/EU) certification, ensuring they meet current environmental regulations for hazardous substance restrictions.