S-90086A554 1/4"-20 x 3" 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 long-lasting performance in demanding environments
- Excellent self-tapping capability with Type F thread cutting design eliminates need for pre-tapped holes in aluminum, brass, cast iron, and sheet metal
- Enhanced driving efficiency with No. 3 Phillips drive providing secure tool engagement and reduced cam-out risk
- Optimal material engagement with UNC coarse threads ensuring strong, reliable fastening in various substrates
- Complete thread coverage with fully threaded 3" length delivers maximum holding power throughout the fastener
- Professional flush installation with standard flat head profile and 82° countersink angle for clean, finished appearances
- Industry compliance assurance meeting ASME B18.6.3 specifications and RoHS 3 environmental standards
Professional Applications & Engineering Value
These Type F tapping screws are engineered to solve critical fastening challenges in industrial assembly applications. The zinc-plated steel construction provides essential corrosion protection while the thread cutting design eliminates the time and cost associated with pre-tapping operations. The UNC coarse threads and fully threaded shank ensure maximum pull-out resistance in aluminum, brass, cast iron, and sheet metal applications. The Phillips flat head configuration allows for flush mounting with standard 82° countersinks, making these self-tapping screws ideal for manufacturing, metal fabrication, and equipment assembly where reliability and efficiency are paramount.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with UNC thread form and standard dimensional tolerances. Features 1/4"-20 coarse thread spacing, 3" fully threaded length, and 82° countersink angle compatibility. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use in various industrial applications. Designed for use with No. 1 drill bit (0.228" diameter) for proper hole preparation in specified materials.
