Plain Washers For Tapping Screw And Washer Assemblies - Type L

Self-tapping screws and flat washers combination is a self-tapping screw with a flat washer combination screws, self-tapping screws are cross-recessed pan head screws, hardness ≥ 140HV,A screw washer is a part that acts as a shim between a screw and a nut, providing additional sealing and vibration dampening to prevent loosening and leakage. Types of screw gaskets include flat washers, spring washers, and cut washers. Among them, spring washers and cutting washers have compression elasticity and can remain under pressure after the screw is tightened, reducing the occurrence of loosening and vibration.     

Self-tapping screws are mainly used for fixing and connecting thin metals, plastics, and other materials. During installation, self-tapping screws can be screwed directly into the material to be fixed without pre-drilling. Its working principle has the following two main aspects:
(1) Tapered holes of self-tapping screws: The tapered holes of self-tapping screws can make them produce a certain expansion and extrusion when screwed into the material to be fixed so that the self-tapping screws can tightly adhere to the material to be fixed to improve the degree of fastening of the connection. Tapered hole design can also make the self-tapping screws can automatically adjust the direction when screwing in, to avoid screwing bias or screwing off.
(2) Self-tapping screws slotted or cross recessed: Self-tapping screws with slots or cross slots can be screwed into the fixed material, resulting in a certain cutting effect, so that the self-tapping screws can be fixed in the material to form a certain thread, to further enhance the degree of fastening of the connection. The design of slots or cross slots can also make the self-tapping screws in the screwing can automatically adjust the tightening direction and strength, to avoid screwing bias or screwing off.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 11-12Page See more product details.    

Packing: The inner packaging consists of polyfoam, while the outer layer is a carton. The carton sizes are 29*19*19.5 cm and 23.5*17.5*8 cm, respectively. The pallet dimensions are 215*100*90 cm, or they can be customized according to your requirements.