Black nickel sealing phillips pan head o ring screw .The head of pan head screws can have slot, cross slot, quincunx slot, etc., which are mainly used to facilitate the use of tools for screwing, and are mostly used on products with low strength and torque. When customizing non-standard screws, the corresponding non-standard screw head type can be customized according to the actual use of the product. We are a fastener manufacturer integrating R&D, production, sales and service, and a screw fastener manufacturer with more than 30 years of customization experience. We can process customized screw fasteners with drawings and samples according to customer needs. The price is reasonable and the product quality is good, which is well received by new and old customers. If you need, you are welcome to consult!