Excellent anti-loosening effect! The screw head itself plays a role greater than that of a washer.
Crown Precision Industry's "Polywave" bends the flange at three points, applies carburizing heat treatment, and gives elasticity to the flange, serving as a loosening prevention mechanism. The head of the screw is angled and folded into a triangular wave shape, and because it undergoes heat treatment to provide elasticity and hardness, the screw head itself plays a role greater than that of a washer. Additionally, when the Polywave is tightened, the wavy seating surface of the Polywave elastically adheres to the object being fastened, resulting in a return torque that is greater than the tightening torque. 【Features】 ■ Superior loosening prevention effect compared to spring washers and toothed washers ■ Return torque increases relative to tightening torque ■ Improved work efficiency and cost reduction ■ Simplification of operations *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please download the PDF or feel free to contact us.
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Applications/Examples of results
【Applications】 ■Washing machine ■Refrigerator (door hinge part) ■Vending machine, etc. *For more details, please refer to the PDF document or feel free to contact us.
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Crown Precision Industries Co., Ltd. has established a mass production system for tapping screws, laying the foundation for today's operations. The company has developed and patented numerous original products, such as "Deltite" and "Plax," while achieving sales success. Additionally, we have created various fastening components with a range of functions that have received positive feedback. Please feel free to contact us if you have any inquiries.