Non standard shoulder bolt double threaded stainless steel double head bolt M5 M6 M8

A screw component comprising a screw body, a spring, and an installation plate. The screw body comprises a nut and a screw, with a multi angle groove at the top of the nut. The screw is composed of an upper and a lower part, and the diameter of the upper part of the screw is greater than that of the lower part. A clamping groove is set at the lower end of the upper part of the screw; The installation plate is equipped with a groove corresponding to the spring, and the groove is equipped with an extension groove, which is L-shaped; One end of the spring is provided with an extension body, which corresponds to the extension groove; The spring is installed between the nut and the mounting plate, and the spring extension body is installed in the groove extension groove. Guangdong Yueluo Hardware Industry Co., Ltd. has the following advantages: it can prevent the spring from rotating with the screw, has a simple structure, and is convenient to use.

With the development of the national economy, many engineering facilities have rapidly increased. In order to prevent theft, welding and riveting have been used in the past. However, due to the limitations of the construction site and the structural limitations of the engineering facilities themselves, not all of them are suitable for disassembly through welding and riveting.

Yueluo - a screw and nut disassembly tool assembly rod for narrow spaces, a second assembly rod set perpendicular to one end of the assembly rod, a connecting rod that fixedly connects the assembly rod and the second assembly rod, a connecting rod located in the axial through hole of the assembly rod, and a bearing that fixedly connects the assembly rod and the connecting rod, enabling the connecting rod to rotate stably within the sleeve. A gear is provided at the close end of the connecting rod and the second connecting rod, Two gears are vertically meshed, and when the connecting rod rotates due to external force, the two gears and the front Guangdong threaded nut loading and unloading tool also have a rotating rod, a sleeve, and a fixed rod fixedly connected to the cover rod at one end. The other end of the fixed rod is connected to one end of the rotating rod, and the rotating rod can rotate around the connection point, rotating the nut or screw to rotate the rotating rod, so that the sleeve head and the opening of the sleeve are opposite, Keep the nut or screw in the sleeve fixed and rotate the corresponding screw or nut in the sleeve head without moving, so as to achieve simultaneous awesome and loading and unloading of the screw and nut.

Embodiment 2 of Guangdong bolt is: a Rivet nut, including a flange shaped nut body 1, the central axis of the nut body 1 is provided with a through hole, the nut body 1 is composed of a columnar part and a head 2 connected to one end of the columnar part, the external contour of the cross section of the columnar part is hexagonal, the columnar part includes an interconnected thread part 4 and a deformation part 3, the deformation part 3 is connected with the head 2, The through-hole corresponding to the threaded part 4 is equipped with internal threads, and the head 2 protrudes from the outer wall surface of the deformation part 3. The thickness of the side wall of the deformation part 3 is 1.5mm, and the difference between the thickness of the side wall of the head 2 and the thickness of the deformation part 3 is 0.5mm. The head 2 and the outer wall surface of the deformation part 3 jointly form a bending part, and both the bending part and the outer wall surface of the deformation part 3 are coated with a folding adhesive layer 5, The folded edge adhesive layer 5 is coated with automotive folded edge adhesive, and the thickness of the folded edge adhesive layer 5 is 4mm.

Referring to Figure 1, one end of the existing embedded nut 1 is embedded in the injection molded part 2 ', and the other end is exposed to the injection molded part 2'. The axial direction of the embedded nut 1 has opposite lower and upper end faces, and the end face of the embedded nut 1 at one end of the injection molded part 2 'is the lower end face. In order to reduce the resistance during hot pressing, an inclined plane is set at the connection between the inner wall surface of the embedded nut 1 'and the lower end face. However, during hot pressing of the embedded nut 1 'with the operational structure, the hot soldering adhesive will generate a flow of water that rises along the inclined plane, forming a convex peak in the screw hole of the embedded nut 1'. This convex peak occupies the space inside the screw hole, making it impossible for the screw 5 'to fully screw in; At the same time, due to the diversion of hot soldering glue, the knurling near the upper end face of the embedded nut 1 'cannot fill the soldering glue, resulting in a weak connection between the embedded nut 1' and the injection molded part 2 '. Therefore, the existing embedded nut 1 'has a lower locking strength with the screw 6' after hot pressing.