S-90627A118 Length 5/8" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black zinc-plated steel construction, extending service life in demanding industrial environments
• Excellent thread-forming capability creates strong, permanent threads in plastic materials without creating chips or debris
• Optimized for plastic applications with DST thread design that prevents material cracking and ensures reliable fastening
• Maximum driving efficiency through Phillips No. 2 drive system that reduces cam-out and improves installation speed
• Full-length threading provides consistent holding power along the entire screw length for superior pull-out resistance
• Precision-engineered dimensions ensure perfect compatibility with No. 35 drill bits (0.11") for streamlined assembly processes
• Standard pan head design offers reliable seating and professional appearance in finished applications

Professional Applications & Engineering Value

These No. 6 x 5/8" DST thread forming screws are specifically engineered to address common challenges in plastic assembly applications. The black zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength. The thread forming design eliminates the risk of material cracking common with traditional tapping screws in plastics, as it displaces rather than cuts material. With 19 threads per inch and fully threaded configuration, these screws distribute clamping force evenly, preventing stress concentration points that can lead to plastic failure. The Phillips drive system ensures quick installation while the pan head design provides a secure, flush finish. Ideal for industrial assembly lines, electronic enclosures, automotive plastic components, and construction applications where reliable plastic fastening is critical.

Specification Summary & Compliance

Manufactured to exact ASME B18.6.3 specifications with precision thread dimensions including 0.138" thread diameter and 19 TPI. Features standard right-hand threading and fully threaded design for maximum engagement. The black zinc-plated surface treatment meets industry standards for corrosion resistance. Compatible with No. 35 drill bits (0.11" diameter) for proper hole preparation. These thread forming screws maintain dimensional accuracy throughout production, ensuring consistent performance in plastic fastening applications.