Overview
| brand | Cantonese snail | Nominal diameter | thirty |
| length | two hundred and twenty | material quality | Stainless steel C450 |
| Applicable scope | Fasteners for communication equipment | producing area | Shenzhen |
| colour | silvery | Functional purpose | |
| Packaging specifications | eighty | model | M30 * 220 |
| Customized or not | no | Order number | Yue Luo-132 6870 6820-15443 |
| Standard type | Japanese standard | Delivery time | Within 48 hours |
| Performance level | Grade 8.8 | Material grade | Carbon steel grade 12.9 |
Product Details
"The anti loose washer has the characteristic of simple installation.
1. Simply place the diagonal tooth surfaces on the inner side of the two gaskets opposite each other and between the nut and the connecting material;
2. After the nut is tightened, the radial convex surface on the outside of the lock washer is engaged with the contact surfaces on both ends, and the slope angle of the bevel surface on the inside of the washer is greater than the thread angle of the bolt;
When the bolt is stretched due to mechanical vibration, the nut will rotate and loosen accordingly. Due to the fact that the frictional force on the outer radial convex surface of the lock washer is greater than the frictional force between the inner inclined tooth surfaces. In this state, only relative misalignment between the inner helical tooth surfaces is allowed, resulting in a certain amount of lifting tension;
When the bolt contracts, the helical tooth surface of the washer will cause the nut to return to its original position. Thus achieving 100% anti loosening and tightening effect;
5. Washers are suitable for flat and smooth surfaces;
If the connecting material is non-metallic, a metal plate can be fixed on the connecting material, so that a lock washer can be used;
7. There is no need to use a torque wrench when installing the lock washer;
8. When installing or removing the lock washer, you can choose to use Pneumatic tool"
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.
The process factors that affect the quality of high-strength fasteners include steel design, spheroidizing annealing, shelling and dephosphorization, pulling, cold heading, thread processing, heat treatment, and sometimes a combination of various factors.
The materials of combination screws are divided into iron and stainless steel. Iron is made of different iron screws and wires. The wire for general combination screws is made of 10101018, 10B21, etc. 10B21 is used to make 8.8 grade combination screws. For example, grade 8.8 hex socket combination screws are commonly made with 10B21 wire. After completion, proceed with heat treatment. After heat treatment, remove the hydrogen before electroplating. This is to prevent the spring washer of the hexagonal combination screw from breaking. Stainless steel combination screws, in the market, generally refer to stainless steel SUS304 combination screws. 201 combination screws are generally rarely made. Few combination screw manufacturers produce 201 combination screws. Because the hardness of stainless steel 201 screw wire is not easy to control, it is easy to produce cracks.
