S-90385A315 Length 1/2" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior plastic retention with DST thread forming design that creates strong, permanent threads without chips or debris
• Enhanced corrosion resistance through zinc-plated steel construction for extended service life in various environments
• Optimized drive efficiency with Phillips No. 1 drive that prevents cam-out and ensures secure installation
• Maximum thread engagement through fully threaded design with 32 TPI for superior holding power in plastic materials
• Reduced material stress with blunt tip design that minimizes cracking or splitting in plastic applications
• Reliable performance compliance meeting ASME B18.6.3 standards for consistent quality and dimensional accuracy
• Versatile pan head profile providing a standard bearing surface for secure fastening in plastic assemblies

Professional Applications & Engineering Value

These No. 2 x 1/2" zinc-plated steel DST thread forming screws are specifically engineered to address common challenges in plastic fastening applications. The unique thread forming design creates strong, permanent mating threads in plastic materials without generating chips or debris that could contaminate sensitive assemblies. The zinc-plated steel construction provides essential corrosion protection while maintaining the necessary strength for durable plastic connections. With their fully threaded configuration and 32 TPI density, these screws distribute clamping force evenly along the entire engagement length, preventing stress concentration points that often lead to plastic failure. The Phillips No. 1 drive ensures reliable installation torque transfer, making them ideal for high-volume production environments where consistent performance is critical for plastic enclosure assemblies, electronic housings, and industrial plastic components.

Specification Summary & Compliance

These thread forming screws feature precise dimensional specifications including No. 2 screw size, 1/2" length, 0.086" thread diameter, and 32 approximate threads per inch with Class 2A thread tolerances. The manufacturing process and dimensional requirements strictly comply with ASME B18.6.3 standards, ensuring consistent quality and performance. The zinc-plated surface treatment provides corrosion resistance while maintaining RoHS and REACH compliance for use in various industrial applications. The pan head design with Phillips No. 1 drive and blunt tip configuration meets all specified requirements for reliable plastic fastening applications.