Nylon head drill tail thread hexagonal dovetail screw plastic waterproof color steel tile self tapping self drilling screw

"Knurled copper nut, specification M5X8X12, outer circle 8.0MM, height 12MM
Material: C3604 (ROHS PASS) brass
Features: Using embossing wheel to press mesh pattern (rolling mesh pattern), with a groove in the middle. After milling the groove, the thread still ensures 6H accuracy This knurled copper nut is used in electric tools, unlike other knurled copper nuts. The diamond pattern of this knurled copper nut is located in the middle section of the product, and the diamond mesh knurled wheel rolls the diamond pattern along the large outer circular step surface"

A screw is a tool that uses the physical and mathematical principles of the oblique circular rotation and friction of an object to gradually tighten the mechanical components of the object. Due to the different components that need to be fixed, different types of screws are required for different usage scenarios. Push on screw is a new type of fastener applied to thin plates or sheet metal. The principle is to press the embossed teeth into the preset holes of the sheet metal. Generally, the aperture of the preset hole is slightly smaller than the outer diameter of the riveting screw. By pressing the outer diameter of the riveting screw into the plate, plastic deformation occurs around the hole, and the deformed object is squeezed into the guide groove, resulting in a locking effect. However, existing compression screws are prone to loosening due to prolonged use or frequent vibration, which can pose certain risks.

Nuts are Tight junction parts of mechanical equipment. Nuts and bolts of the same specification can only be connected together through the inner thread. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (in nuts, M4 refers to the inner diameter of the nut is about 4mm, and 0.7 refers to the distance between two threads is 0.7mm); The same applies to American products, such as 1/4-20 nuts that can only be paired with 1/4-20 screws (1/4 refers to a nut with an inner diameter of approximately 0.25 inches, and 20 refers to 20 teeth per inch).

In recent years, rivet nuts have been widely used as fasteners, which have replaced some existing methods of welding seam processing within a certain range. Riveting nuts are a method of connecting equipment and other components that are difficult to weld. The use of rivet nuts requires rivet nut equipment (such as manual rivet nut equipment). Precautions before using manual nut riveting equipment. Firstly, ensure that the nozzle screws are properly assembled. Select appropriate equipment and rivet bolts based on the size of the rivet nut. Each connecting part is not secure. 2. Confirm the deformation length or displacement of the rivet nut, and then adjust the lever angle. 3. The scale ring of the rivet nut equipment is used to adjust the rivet stroke and can be adjusted freely as needed. When adjusting the length of the rivet bolt, open both handles and adjust the equipment head sleeve. The length of the rivet bolt exposed is slightly greater than the length of the rivet nut, and the nut and equipment sleeve will eventually be adjusted.

In various machines and equipment, various spare parts are fixed and assembled through bolts and nuts. However, after using the machine and equipment for a period of time, bolts and nuts may become loose, posing significant safety hazards to the use of the machine and equipment. For this reason, when using bolts and nuts for connection, a spring washer is installed between the nut and the connected part. The spring washer is circular in shape and the ring is not closed, and it is sleeved on the bolt. The addition of this spring washer, although it has a certain anti loosening effect, can only prevent the nut from rotating relative to the bolt. In cases of high machine vibration, the bolt will rotate relative to the connected part