S-90096A333 1/4"-20 x 5/8" 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 environments
- Excellent thread-cutting performance with Type F tapping design that creates strong, secure threads in various materials
- Maximum torque application through external hex head design for reliable installation and removal
- Enhanced load distribution with integrated flange that eliminates the need for separate washers
- Reliable coarse threading with UNC 1/4"-20 specification for quick installation and strong holding power
- Versatile material compatibility specifically engineered for aluminum, brass, cast iron, and sheet metal applications
- Full threading design ensures consistent engagement along the entire 5/8" length for maximum grip strength
Professional Applications & Engineering Value
These zinc-plated steel tapping screws deliver exceptional thread-cutting performance in challenging industrial applications. The Type F thread-cutting design combined with coarse UNC threading enables reliable installation in aluminum, brass, cast iron, and sheet metal without pre-tapped holes. The flanged hex head provides superior clamping force distribution while the external hex drive ensures maximum torque transfer during installation. Engineered for heavy-duty industrial fastening, these screws eliminate the need for separate washers and tapping operations, significantly reducing assembly time and labor costs in manufacturing, metal fabrication, and machinery applications where vibration resistance and secure fastening are critical.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications (SAE J933) with UNC 1/4"-20 coarse thread spacing and Class 2A thread tolerance. Features include 5/8" length, 3/8" hex head width, 0.52" flange diameter, and requires No. 2 drill bit (0.221" diameter) for proper installation. Fully compliant with RoHS 3 (2015/863/EU) environmental standards, ensuring safe use across various industrial sectors.
