並前往https://www.norelem.com/us/en/Products/Product-overview/Flexible-standard-component-system/07000-Fasteners-Ball-end-thrust-screws-Thrust-screws-and-thrust-pads-Grippers-Torque-bolts-Threaded-inserts-Lifting-bolts-Swivel-bales-Ring-bolts/Connecting-elements/07303-Conical-spring-washers-DIN-6796.html