德国采购需求：黑色磷酸盐干壁钉、C型钩头螺钉、盘头开槽螺钉、弹簧螺母、带法兰的六角螺母、M5槽形螺母

I'm looking for a reliable supplier for washers with a focus on quality and consistency. We are interested in multiple sizes and materials according to our various applications. It would be great to receive details on your product specifications, available stock, and pricing options. Additionally, if you have any recommendations for different types of washers that might suit our needs better, please share those insights. Timely delivery and competitive pricing are crucial, so I'd appreciate any information on your lead times and payment terms as well. Looking forward to your prompt response!