S-90096A537 1/4"-20 x 1/2" 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
- Exceptional thread-cutting performance with Type F tapping design that creates precise mating threads in various materials
- Maximum torque application through external hex/slotted drive combination for secure installation and removal
- Enhanced load distribution with integrated flange design that eliminates the need for separate washers
- Reliable fastening in multiple materials including aluminum, brass, cast iron, and sheet metal applications
- Optimized thread engagement with UNC coarse thread pattern that provides superior holding power
- Full-length threading ensures consistent grip strength along the entire screw length
Professional Applications & Engineering Value
These zinc-plated steel tapping screws deliver exceptional engineering value by solving common industrial fastening challenges. The thread-cutting design eliminates the need for pre-tapped holes, significantly reducing assembly time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The flanged hex head provides superior bearing surface distribution, preventing material deformation while the external hex/slotted drive accommodates both manual and power tool installation. With UNC coarse threads and full threading, these screws maintain consistent clamping force in vibration-prone environments, making them ideal for heavy-duty industrial assemblies where reliability is critical.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with SAE J933 compliance, these tapping screws feature precision UNC 1/4"-20 coarse threads with standard Class 2A tolerances for consistent performance. The zinc-plated steel construction meets RoHS 3 (2015/863/EU) compliance for environmental safety. Engineered for use with No. 2 drill bit (0.221" diameter), these fully threaded screws deliver reliable performance in industrial applications requiring thread-cutting capability without pre-tapped holes.
