S-90096A106 4-40 x 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 environments
- Excellent thread-cutting performance in aluminum, brass, cast iron, and sheet metal without pre-tapped holes
- Secure, high-torque installation enabled by external hex/slotted drive combination for reliable fastening
- Enhanced load distribution through integrated flange design that eliminates the need for separate washers
- Optimized material displacement with Type F coarse threads that provide superior holding power in soft metals
- Full-length threading ensures maximum engagement depth and consistent clamping force throughout the fastener length
- Industry-standard compatibility with No. 41 drill bit (0.096") for precise, standardized installation procedures
Professional Applications & Engineering Value
These 4-40 UNC thread cutting 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 applications. The Type F tapping screw design with coarse UNC threads efficiently cuts mating threads in aluminum, brass, and cast iron components, eliminating costly tapping operations and reducing assembly time. The combination of external hex/slotted drive offers installation flexibility for both power tools and manual drivers, while the integrated flange prevents pull-through in thin sheet metal applications. These industrial-grade tapping screws solve critical challenges in electrical enclosures, machinery panels, and automotive components where vibration resistance and reliable thread engagement are paramount.
Specification Summary & Compliance
This No. 4 screw features precise 4-40 UNC coarse threads with standard Class 2A tolerances, fully threaded design, and 1/4" length configuration. Manufacturing complies with ASME B18.6.3 specifications (SAE J933) ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) Compliant for environmental safety and meets industry standards for use with No. 41 drill bit (0.096" diameter) in preparation for installation.
