S-90086A632 12-24 x 1 1/4" ASME B18.6.3, SAE J933 Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
- Excellent thread-cutting performance in aluminum, brass, cast iron, and sheet metal without requiring pre-tapped holes
- Maximum holding power achieved through full-length threading and Type F thread cutting design
- Secure installation with Phillips No. 3 drive providing reliable torque transmission and reduced cam-out risk
- Flush mounting capability with standard 82° flat head profile for smooth surface finishes
- Industry-standard compatibility with UNC coarse threads ensuring reliable engagement in various materials
- Regulatory compliance meeting ASME B18.6.3 specifications and RoHS 3 environmental standards
Professional Applications & Engineering Value
These 12-24 UNC tapping screws deliver exceptional engineering value in metal fabrication and assembly operations. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength for permanent fastening solutions. The thread cutting design (Type F) eliminates the need for separate tapping operations, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The coarse UNC threads ensure rapid installation and superior pull-out resistance, while the Phillips drive offers familiar, efficient driving compatibility with standard industrial tools. These industrial fasteners are engineered to prevent stripping and provide consistent clamping force in high-vibration environments.
Specification Summary & Compliance
These tapping screws feature precise 12-24 UNC coarse threads with standard Class 2A tolerances for consistent performance. The manufacturing process strictly adheres to ASME B18.6.3 specifications SAE J933, ensuring dimensional accuracy and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) certification, confirming the absence of restricted hazardous substances. The 1-1/4" length and No. 12 screw size provide optimal fastening depth for medium-thickness materials, with recommended No. 8 drill bit (0.199" diameter) for proper hole preparation.
