クラウン精密工業 List of Products and Services

Crown Precision Industry's "Riblock" is a stud bolt effective for fastening with non-weldable materials. It can be installed simply by inserting it into the punch holes or drill holes of the counterpart material and applying pressure, eliminating the need for expensive auxiliary equipment; a riveting machine is sufficient. Since it is a rivet fastening method using plastic deformation, it offers high productivity and can be integrated into the production line, significantly improving work efficiency. 【Features】 ■ Easy installation ■ Increased work efficiency ■ Capable of bonding with non-weldable materials (such as aluminum and copper) ■ High precision and appearance ■ Contributes to improving the work environment as welding work is not required *For more details, please refer to the PDF materials or feel free to contact us.

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Crown Precision Industries' "Lip Screw" is a screw developed from the analysis of troubles during the clamping of thin plates. By making the screw thread angle "asymmetric," it prevents female thread breakage and improves strength by embracing the thin plate during tightening, thereby enhancing workability and yield. The end of the screw is rounded, and the taper gradually raises the thread while leaving a section without threads, making hole probing easier and improving work efficiency. 【Features】 ■ Increased tightening strength ■ Stable fastening achieved ■ Improved workability ■ No risk of injury *For more details, please refer to the PDF materials or feel free to contact us.

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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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Crown Precision Industry's "Plax" is a tapping screw made from low carbon steel (12C) that has undergone gas carburizing and quenching. This product has a low screwing torque due to the reduced contact resistance in the intermittent sections, which consist of high and low thread peaks, during the female thread forming process. The outer diameter of the high thread peaks in the intermittent sections is slightly larger than that of the regular thread section, preventing degradation of synthetic resin due to reduced contact surface area and frictional heat. 【Features】 ■ Low screwing torque ■ Minimal frictional heat, preventing female thread breakage ■ Does not loosen under vibration or impact ■ Reusable *For more details, please request materials or view the PDF data available for download.

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Crown Precision Industry's "View Head" is a beautifully designed, thin screw with a streamlined head that fits snugly against the material being fastened. Due to its large seating surface area, it experiences minimal distortion changes against the material being fastened, allowing for a clean tightening. It is manufactured using a process design that analyzes fiber flow, incorporating manufacturing methods and guaranteed processes that prevent head popping. 【Features】 ■ Large seating diameter ■ Thin head height ■ Smart head design ■ Engineering design *For more details, please refer to the PDF document or feel free to contact us.

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Crown Precision Industry's "Shoulder Deck" is a stepped screw that eliminates the incomplete thread section of stepped screws by combining screws and spacers, bringing it to "zero." This product prevents unstable fastening caused by screw stripping due to incomplete thread peaks. Additionally, it has a simple structure that combines standard spacers with ordinary small screws, allowing for cost-effective production. 【Features】 ■ Zero incomplete thread section ■ No unstable fastening ■ Combination of screws and spacers ■ Cost-effective production *For more details, please refer to the PDF document or feel free to contact us.

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Crown Precision Industry's "Polydeltaite" is a composite product that combines the head of Polywave with the threaded part of Deltalite. This product can absorb external forces acting on the axis, whether perpendicular or around the axis, through three protrusions provided on the seating surface, preventing loosening of the threads. Additionally, since the threaded part uses Deltalite, there is almost no damage to the formed threads, and the holding power is further enhanced. 【Features】 ■ No tapping required ■ Low screwing torque ■ High holding power ■ Minimal cutting debris ■ Compatible with small screws *For more details, please refer to the PDF document or feel free to contact us.

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"Deltaite" is our original self-tapping forming screw that shapes the female thread through plastic processing. Compared to various tapping screws, the tip gradually forms the female thread, resulting in an extremely low screwing torque, which helps improve work efficiency and reduce worker fatigue, providing excellent workability. Additionally, the material is low-carbon steel that has undergone gas carburizing and quenching, fully utilizing the characteristics of tapping screws. 【Features】 - Significant cost reduction possible as female thread formation by tapping is unnecessary - Low screwing torque with excellent workability - High holding power that does not loosen under vibration or impact - Minimal cutting chips - Compatible with small screws *For more details, please download the PDF or feel free to contact us.

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