A nut is a nut, a part screwed together with a bolt or screw rod for fastening. It is a necessary component for all production and manufacturing machinery There are many kinds of nuts, including carbon steel, high strength, stainless steel, plastic steel, etc According to different national standard numbers corresponding to product attributes, they are divided into ordinary, non-standard, (old) national standard, new national standard, American system, British system, German standard, etc.Hexago···

1. According to the stress mode of connection, there are common and reaming holes The bolts used for reaming holes shall match the size of the holes, and shall be used under lateral force.2. According to the head shape, there are hexagonal head, round head, square head, countersunk head, etc. generally, countersunk head is used where the surface is required to be smooth without protrusion after connection, because countersunk head can be screwed into parts. The round head can also be screwed int···

        Large flat head screws have different specifications like ordinary screw fasteners. The specifications of large flat head screws are generally m2-m8. Here refers to the diameter and length of large flat head screws, which are generally between 3-90mm. Of course, large flat head screws of different lengths can also be customized according to different needs of users.        There are many specifications and si···

        Large flat head screw is also a commonly used screw fastener. It means that the head of the screw is flat head, as shown in the above figure. We often call it flat head screw. Large head screw is also commonly represented by many letters, such as Ta, TM. TA represents large flat head self tapping screw, and T represents the head of the screw in the screw fastener, which refers to large flat head, also known as umbrella head, Because its head looks ···