S-90086A831 10-32 x 3/4" 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, extending service life in demanding industrial environments.
- Efficient thread cutting action with Type F tapping design eliminates the need for pre-tapped holes, saving time and labor costs.
- Secure and flush installation thanks to the standard flat head with 82° countersink angle, providing a smooth surface finish.
- Reliable drive engagement with No. 2 Phillips drive, reducing cam-out and ensuring consistent torque application.
- Excellent holding power in various materials including aluminum, brass, cast iron, and sheet metal due to the UNF fine thread profile.
- Full thread coverage along the 3/4" length maximizes grip strength and distributes load evenly.
- Precision compatibility with No. 17 drill bit (0.173" diameter) for accurate hole preparation and optimal performance.
Professional Applications & Engineering Value
These 10-32 UNF zinc-plated steel tapping screws are engineered to solve common fastening challenges in metalworking and fabrication. The thread cutting design creates precise mating threads in ductile materials like aluminum, brass, and cast iron, eliminating stripping and ensuring vibration-resistant connections. The flat head with 82° countersink sits flush in pre-drilled holes, preventing snagging in machinery and assembly lines. Made from robust zinc-plated steel, they resist rust in humid or outdoor settings, making them ideal for sheet metal enclosures, automotive components, and electrical chassis. Their right-hand fine thread offers superior pull-out strength compared to coarse threads, critical for high-stress applications.
Specification Summary & Compliance
This product meets Class 2A thread tolerances per UNF (Unified National Fine) standards, ensuring precise fit. Manufacturing follows ASME B18.6.3 specifications (referencing SAE J933) for dimensional accuracy and performance. The screws are fully threaded with a 0.19" thread diameter and fine thread spacing. Compliance includes RoHS 3 (2015/863/EU) for environmental safety, containing no restricted hazardous substances.
