To guarantee Screws items of the highest caliber, we go above and beyond industry expectations with rigorous quality control practices. For example, all fasteners and hardware parts are strictly sourced from leading manufacturers that we have vetted, such as Itw Buildex/Redhead/Ramset and others. Furthermore, countless listings are inspected and tested for fit, form, and function, and our strict NO CHINA SOURCING pledge ensures that everything ships out alongside any qualifying certifications or manufacturing trace documentation. Coupled with other various dedications, we proudly conduct operations with AS9120B, ISO 9001:2015, and FAA AC 00-56B accreditation. Kick off procurement today for part number 2159500 and other 8-18 X 1-5/8 Phillips Wafer Head W/ Ribs Under Head High-Low Thread Climacoat® Finish Type S12 Point Cement Board Screw items of interest, and see how we at Unlimited Fasteners can serve you.