long socket screws black under what circumstances need to open die?

In hardware fasteners, the production of screws is generally divided into CNC production and cold heading production. The screws produced by CNC do not need molds, while the screws produced by cold heading need molds, which also involves mold costs. So if it’s cold heading, under what circumstances will the screw need to be moulded? Such as long socket screws black.

Lead to long socket screws black need to open mold, one is to see the screw manufacturer, one is to see the buyer.

The screw manufacturer mainly looks to see whether similar screws have been produced before, and whether the long hexagon socket screw required by the customer can share the mold. If the mold can be Shared, then there is no need to open the mold.

Buyers to see if there is a design logo on the head of the long socket screws black, such as this is the need to open mold. No screw manufacturer will have the logo required by the customer, and the screw manufacturer will not expect that the customer will place an order for it, and the head of the screw also requires its own logo. However, if the logo is not directly on the head of the screw during cold heading, then the logo can be displayed on the head of the screw by laser engraving, etc.