S-90086A242 10-24 x 1/2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in industrial environments
• Efficient thread cutting action with Type F design creates precise mating threads in ductile materials without pre-tapping
• Optimized drive engagement through No. 2 Phillips drive prevents cam-out and ensures secure installation
• Flush mounting capability with undercut flat head design and 82° countersink angle for smooth surface finishes
• Enhanced material compatibility specifically engineered for aluminum, brass, cast iron, and sheet metal applications
• Reliable coarse thread grip with UNC 10-24 threading provides superior holding power in soft materials
• Full-length threading maximizes engagement depth and distributes load evenly across the fastener

Professional Applications & Engineering Value

These 10-24 UNC zinc-plated steel tapping screws deliver exceptional value in metal fabrication and assembly operations. The thread cutting design eliminates the need for separate tapping operations, significantly reducing installation time and labor costs in production environments. The Type F tapping screw configuration with coarse UNC threading provides excellent chip clearance when fastening into aluminum, brass, and cast iron components, preventing thread stripping and ensuring reliable connections. The undercut flat head with 82° countersink angle allows for flush mounting in precision applications where surface protrusions are unacceptable. These zinc-plated fasteners maintain their integrity in various industrial conditions, making them ideal for sheet metal assemblies, electrical enclosures, machinery components, and automotive applications where vibration resistance and long-term performance are critical.

Specification Summary & Compliance

These tapping screws feature 10-24 UNC coarse threads with standard Class 2A thread tolerances and are fully threaded for maximum engagement. Manufacturing complies with ASME B18.6.3 specifications and SAE J933 standards ensuring dimensional accuracy and performance reliability. The products are RoHS 3 (2015/863/EU) compliant and designed for use with No. 17 drill bits (0.173" diameter) for proper hole preparation. The right-hand threading and blunt tip facilitate straightforward installation in the specified materials.