美国采购需求：肩螺钉、自攻螺钉、翼形螺钉、六角螺栓、马车螺栓、法兰螺栓

I'm looking for a quote on some specific types of flat bottom torx screws. Particularly, I'm interested in two sizes that are often used in various applications, and I need to ensure they meet certain quality standards. If you could provide me with details regarding your available inventory, including material specifications, and any options for bulk purchasing, it would be much appreciated. Additionally, please include your pricing, lead times, and minimum order quantities. It's crucial for us to have reliable fasteners, so information on any testing or certifications for these screws would also be beneficial. Looking forward to your quick response so we can move forward with this procurement.