Shenzhen Shi Shi Tong Metal Products Co., Ltd

Shi Shi Tong Screw Factory specializes in producing all kinds of non-standard shoulder screws. Among the various non-standard shoulder screws, the slotted shoulder screw is the most commonly used and seen by us. So, do you know the  slotted   shoulder screw ? Metric  slotted shoulder screw  can also be called shoulder bolts. What is a shoulder screw? A fastener with a non-threaded cylindrical section between the thread and the screw can be called a shoulder screw. The diameter of the shoulder is greater than the diameter of the thread and provides a shaft to fit around the tightly fitting moving parts. The slotted shoulder screw can be matched with the shoulder part below, and the diameter of the shoulder can be as small as the small diameter of the thread. The slotted shoulder screw is determined by the diameter and length of the shoulder. Of course, the shoulder screw can also produce a hexagon socket. The dimensional tolerances of the shoulde...

The  slotted screw  is used more when the screw is just invented. So how do you know how a  slotted screw  is produced? How a  slotted  screw  is made? The processing of slotted is divided into three kinds, one is the mold forming directly, one is the milling machine forming or the automatic cutting machine is formed. It depends on the actual product requirements to decide which process way to use. Mold direct molding, processing speed is very fast, high efficiency, the cost is much cheaper compared to the lathe cost, but there is a small malpractice, there will be a little bit of “eight” shape on both sides of the slot, if only to meet the use of a word lock tight, this quality requirement is no problem. The milling machine is very slow and purely manual. It is generally suitable for products that are not large in size and require smooth and smooth characters. Automatic slotting machine molding, although the speed can not be compared with...

When many screw fasteners are produced, there are occasional problems that cause the screws to become defective and cannot be used. The problems with the appearance of these screws generally include thimbles on the surface, scratches, heads, headshots, and the like. So why is there a trace on the surface of the  round head slotted machine screws ? There are traces on the surface of the  round head slotted machine screws . Generally, there is a problem with the mold. For example, if the mold is broken and the surface of the mold has fine iron scraps, the surface of the screw will be traced. Some customers will ask for the presence of traces on the head surface of the  round head slotted machine screws , as they are used as exterior parts. When the surface of the screw has traces, it looks less beautiful. So they will ask for no traces on the surface of the screw.