S-90096A366 1/2"-13 x 4" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Efficient installation with external hex drive providing maximum torque transfer and secure fastening
• Excellent thread-cutting performance in multiple materials including aluminum, brass, cast iron, and sheet metal
• Enhanced load distribution through integrated flange design that eliminates the need for separate washers
• Reliable coarse UNC threading (1/2"-13) that resists loosening under vibration and provides strong holding power
• Full threading along the 4" length ensures consistent engagement and maximum pull-out strength
• Compliance with industry standards including ASME B18.6.3 and RoHS 3 for quality assurance and environmental safety

Professional Applications & Engineering Value

This zinc-plated steel tapping screw delivers exceptional engineering value in industrial fastening applications where thread-cutting capability and vibration resistance are critical. The coarse UNC thread pattern (1/2"-13) combined with specialized thread-cutting design enables reliable installation in aluminum, brass, cast iron, and sheet metal without pre-tapped holes, significantly reducing assembly time and labor costs. The flanged hex head provides superior clamping force distribution while the external hex drive allows for high-torque installation with standard tools. These features make it ideal for heavy-duty construction, metal fabrication, and industrial equipment assembly where joint integrity and long-term performance are paramount.

Specification Summary & Compliance

This 1/2"-13 tapping screw features precise UNC coarse threads with standard manufacturing tolerances, fully threaded along its 4" length. The product meets ASME B18.6.3 specifications (SAE J933) for dimensional accuracy and performance requirements. Compliance with RoHS 3 (2015/863/EU) ensures environmental safety and regulatory adherence for international industrial applications. The screw is manufactured from zinc-plated steel with a flanged hex head (3/4" width, 0.485" height) and external hex drive configuration for reliable industrial use.