英国采购需求：紧固件、五金件、螺母、螺纹杆、不锈钢、六角螺母

I'm looking for a quote for an initial order of 500 pieces each for two specific products that feature stainless steel inserts and different thread pitches. I'm particularly interested in receiving your ex-works pricing in USD for both items. This inquiry marks the beginning of a significant product line for us, and we anticipate selling millions of these annually. As we hope to establish a long-term partnership, a competitive quote from your side would be greatly appreciated. Please include any relevant details regarding lead times, payment terms, and any minimum order quantities that may apply. Looking forward to your prompt response!