Is there any equipment for testing screws, nuts, fasteners, etc?

Yes, there are many testing equipments for screws, nuts and fasteners, both general and customized. Different sizes, testing accuracy and speed of screws, nuts and fasteners have different requirements for testing equipment. It is best to choose customized testing equipment, and manufacturers can set different testing parameters according to customers' requirements to meet their different needs. On Alibaba's website, there is a shop called "Shanxi Keshuo Automation Equipment Co., Ltd.", which specially introduces the equipment of screw and nut detector. You can go in and have a look and ask in detail!