S-90087A105 4-40 x 3/16" 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, extending service life in demanding industrial environments
- Effortless installation through thread-cutting design that eliminates pre-tapping in aluminum, brass, cast iron, and sheet metal
- Enhanced driving efficiency with Phillips No. 1 drive system providing secure torque transfer and reduced cam-out risk
- Optimized material engagement through coarse UNC threads delivering maximum holding power in softer materials
- Reliable flush mounting with standard pan head profile ensuring uniform surface contact and professional finish
- Full-length threading for consistent grip strength across the entire 3/16" fastener length
- Precision compatibility with No. 41 drill bits (0.096") for accurate pilot hole preparation
Professional Applications & Engineering Value
These 4-40 UNC thread cutting tapping screws solve critical fastening challenges in metal fabrication and assembly operations. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength for durable connections. Engineered with Type F thread cutting geometry and blunt tip design, these screws form precise mating threads in aluminum, brass, cast iron, and sheet metal without separate tapping operations, significantly reducing assembly time and labor costs. The coarse thread spacing ensures rapid installation while maintaining exceptional pull-out resistance, making them ideal for high-volume production environments where reliability and efficiency are paramount.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications (SAE J933) with UNC coarse threads in 4-40 size and Class 2A tolerance for consistent fit. Features include 3/16" length, fully threaded shank, right-hand thread direction, and pan head configuration. Compliant with RoHS 3 (2015/863/EU) regulations for environmental safety and restricted substance control. Recommended for use with No. 41 drill bit (0.096" diameter) for optimal performance in designated materials.
