S-91655A244 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments.
• Superior load distribution thanks to the flanged pan head design, reducing the risk of material damage and improving joint integrity.
• Strong, reliable thread forming with A/AB type tapping, creating secure fastenings without pre-tapped holes in sheet metal up to 0.025" thickness.
• Full threading for maximum grip along the entire 1/2" length, providing consistent holding power and vibration resistance.
• Easy installation and alignment with a No. 2 square drive and pointed tip, speeding up assembly in metalworking applications.
• Wide compatibility with standard No. 21 drill bits, simplifying tooling requirements and reducing setup time.
• Durable, right-hand thread design for secure fastening in demanding sheet metal and industrial fastener applications.

Professional Applications & Engineering Value

These No. 10-12 thread forming tapping screws are engineered to address common challenges in sheet metal fabrication, such as material splitting and loose fastenings. The zinc-plated steel build offers enhanced corrosion resistance, crucial for outdoor or high-moisture settings. With a flanged pan head, the screw distributes clamping force evenly, preventing deformation in thin-gauge metals. The thread forming design eliminates the need for pre-tapped holes, reducing labor and tooling costs while ensuring a tight, vibration-resistant fit. Ideal for HVAC, automotive, and enclosure assemblies, these screws deliver reliable performance in industrial screw applications where durability and ease of installation are paramount.

Specification Summary & Compliance

This tapping screw adheres to standard inch measurements, with a thread diameter of 0.19" and approximately 12 threads per inch. It features a fully threaded right-hand design, compatible with No. 21 drill bits (0.159" diameter) for sheet metal up to 0.025" thickness. Manufactured to common thread forming specifications (A/AB type), it ensures precise fit and is typically compliant with industry standards for sheet metal fasteners. The zinc-plated finish supports RoHS and REACH environmental guidelines, providing a safe, corrosion-resistant solution for various industrial uses.