Black nylon plastic screw dome bolt protection cover decorative hexagonal nut cover M4 M5

The embedding of fasteners, especially the embedding material of screws. The key point of its structure is that it includes a circular base, one located at the base, and multiple column tubes located at the base, with ribs connected between the column tubes and the column tubes located at the base. The column pipes are respectively fixed holes and fastener embedding holes. By fixing the holes, the product is fixed on the template that requires the use of threaded points. After the floor is poured with concrete, the thread embedding material is embedded, and the floor represents the thread embedding hole used for installing the object. Drill holes again in the future to avoid damaging the walls and floors. Guangdong Yueluo Hardware Industry Co., Ltd. has a simple structure, simple embedment, strong tensile resistance, and durability.

A self-locking screw, comprising a screw body, wherein the upper part of the screw body is provided with a metal screw head, the middle part of the screw body is provided with a thread, and the upper part of the screw body is provided with interference grooves on both sides. The center line of the interference groove forms an angle of 280-357 ° with the horizontal line. The bottom of the screw body is provided with an elastic clamp, which includes an optical axis and a conical head. Guangdong Yueluo Hardware Industry Co., Ltd. Guangdong Yueluo Hardware Industry Co., Ltd. adopts an elastic clamp design, with thread segments and interference grooves set on the screws, which generates elastic force along the axial direction of the screw during the screw rotation process, achieving reliable self-locking effect, convenient use, and high tuning efficiency.

At present, in the production process, the inner wall of the circlip is lubricated quantitatively and evenly, and then the rotating shaft is inserted into the circlip so that the rotating shaft can rotate in the circlip, thus realizing the rotating function of the Sun visor. However, due to the tight fit between the circlip and the rotating shaft, during the insertion process of the rotating shaft, the front end is prone to pushing grease from one end of the opening of the circlip to the other end of the opening, resulting in less or even no grease left between the rotating shaft and the inner wall of the circlip, which can easily lead to a lack of lubrication between the rotating shaft and the circlip, dry friction between the rotating shaft and the circlip, resulting in a series of problems such as abnormal noise, difficult operation, and poor durability.

Literature 1: Japanese Shikai Zhao Bulletin No. 58-162312 Literature 2: Japanese Tekai Ping Bulletin No. 9-242731 Yueluo Yueluo aims to provide a kind of Rivet nut that can be installed on the installed parts with a wide range of plate thickness by using a Rivet nut without adverse conditions. Another purpose of Guangdong screw is to provide a Rivet nut that can make the tubular part fully expanded and reliably installed on the installed part. In order to achieve the above objectives, the Yue snail forms thicker and thinner parts in the tubular part (the expanded part), and starts from the thinner part to expand, then causes the thicker part to expand.

To sum up, a Rivet nut provided by Guangdong Screw includes a flange shaped nut body 1 and a folding adhesive layer 5. The folding adhesive layer 5 is coated on the outer wall surface of the bending part and the deformation part 3. After the Rivet nut is riveted, the folding adhesive layer 5 is filled in the connection between the nut body 1 and the sheet metal plate 6, which can enhance the connection strength of the nut and the sheet metal plate 6, and improve the torsional resistance of the Rivet nut, Prevent the Rivet nut from rotating with the bolt when the bolt is assembled with the Rivet nut; The evenly distributed groove can make the metal plate at the edge of the mounting hole of the sheet metal part 6 partially embedded into the groove due to deformation during riveting, improve the torsional resistance of the Rivet nut, increase the bonding area of the folding adhesive layer 5, and further strengthen the connection strength between the nut and the sheet metal part 7; Automotive edge folding adhesive can mix with the oil on the surface of the white body without affecting its oil surface bonding strength, and can withstand various process conditions during the production process of the body.