S-90385A313 Length 5/16" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in various environments
• Exceptional holding power in plastic materials through advanced DST thread forming technology that creates strong, permanent threads
• Quick and efficient installation with Phillips No. 1 drive that prevents cam-out and reduces assembly time
• Optimal thread engagement with 32 threads per inch design providing maximum surface contact and pull-out resistance
• Reliable performance in plastic applications featuring fully threaded 5/16" length for consistent fastening along the entire shank
• Reduced material stress with thread forming design that displaces rather than removes plastic material
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and dimensional accuracy

Professional Applications & Engineering Value

These No. 2 zinc-plated steel tapping screws are specifically engineered to address common challenges in plastic fastening applications. The DST thread forming technology creates strong, permanent threads in plastic materials without generating chips, eliminating contamination concerns in sensitive assemblies. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for durable connections. With 32 threads per inch and fully threaded design, these screws distribute clamping force evenly, preventing stress concentration and material cracking. The Phillips No. 1 drive ensures secure tool engagement during installation, reducing the risk of stripped drive heads and production delays. Ideal for plastic fabrication, electronic enclosures, automotive trim, and consumer products where reliable fastening in plastic substrates is critical.

Specification Summary & Compliance

These tapping screws feature precise 0.086" thread diameter with 32 TPI thread pitch and 5/16" fully threaded length for consistent performance. Manufactured to ASME B18.6.3 specifications, ensuring dimensional accuracy and reliable mechanical properties. The thread forming design (DST type) creates strong mating threads in plastic materials without pre-tapped holes. Compliant with industry standards for tapping screws in plastic applications, providing assurance of quality and performance consistency for engineering and manufacturing requirements.