S-90096A421 3/8"-16 x 2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior thread cutting performance in aluminum, brass, cast iron, and sheet metal without pre-tapping, reducing installation time and labor costs.
• Enhanced corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• Maximum torque transmission via the external hex/slotted drive design, allowing for secure tightening with standard tools and minimizing stripping risks.
• Reliable fastening in coarse threading applications with UNC 3/8"-16 threads, providing strong holding power and vibration resistance.
• Integrated flange design eliminates the need for separate washers, distributing load evenly and preventing surface damage.
• Full threading and blunt tip enable consistent engagement and easy alignment, speeding up assembly in high-volume production.
• Compliance with ASME B18.6.3 and RoHS 3 standards guarantees consistent quality, safety, and environmental responsibility for industrial use.

Professional Applications & Engineering Value

This Type F tapping screw is engineered to address common challenges in metalworking and fabrication, such as material fatigue and installation inefficiencies. The zinc-plated steel construction offers excellent resistance to rust and wear, making it ideal for applications in aluminum, brass, cast iron, and sheet metal where exposure to moisture or chemicals is a concern. Its coarse UNC threading and thread-cutting design allow for self-tapping in pre-drilled holes (using R drill bit, 0.339" diameter), reducing the risk of cross-threading and ensuring secure fastening in structural assemblies. The external hex/slotted drive accommodates high-torque tools, facilitating quick installations in automotive, machinery, and construction projects while maintaining ASME B18.6.3 compliance for reliability.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with a 0.375" diameter and 2" length, manufactured to precise Class 2A tolerance for consistent fit. It adheres to ASME B18.6.3 specifications (referencing SAE J933) for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) compliant, ensuring it meets environmental standards for hazardous substance restrictions, and is designed for use with a R drill bit (0.339" diameter) in applicable materials.